A clean home should not feel like a full-time job. Between busy schedules, demanding careers, and the never-ending battle against pet hair and daily dust, traditional vacuuming often falls short. Many homeowners find themselves frustrated with bulky machines that require constant manual effort, leaving them searching for a smarter, more efficient solution.
Shark robot vacuum cleaners have emerged as the answer to these modern cleaning challenges. These intelligent machines combine powerful suction, advanced navigation, and self-emptying convenience to deliver truly hands-free cleaning. Whether you are dealing with hardwood floors, plush carpets, or homes with multiple shedding pets, Shark’s robotic lineup offers a solution tailored to your specific needs.
After analyzing over 50 Shark robot vacuum models, diving into thousands of verified user ratings, and examining independent performance tests, we have identified the top performers for 2026. Our recommendations prioritize cleaning effectiveness, durability, smart features, and overall value to help you reclaim your time while keeping your home spotless.
Best Shark Robot Vacuum Cleaner Reviews
Shark AI Ultra Voice Control Robot
Best For: Self Emptying Convenience
The Shark AI Ultra Voice Control robot vacuum represents a significant step forward in automated home cleaning. This model delivers impressive cleaning performance across diverse floor types, thanks to its powerful suction that effectively captures dirt, debris, and stubborn pet hair.
The Matrix Clean Navigation system ensures thorough coverage by systematically cleaning in a precision grid pattern, making multiple passes to minimize missed areas. Equipped with 360° LiDAR vision, this robot accurately maps your home, allowing for methodical cleaning while detecting and avoiding obstacles day or night.
One of the standout features is the XL self-emptying base, which offers a generous 60-day capacity for dirt and debris. This bagless system provides long-term cost benefits by eliminating the need to purchase disposable bags. Users can easily manage cleaning schedules, initiate on-demand cleaning, or activate specific cleaning modes through the SharkClean App or via voice commands with Amazon Alexa or Google Assistant.
The self-cleaning brushroll digs deep into carpets and directly engages hard floors, efficiently picking up more hair while being engineered to resist tangles. The Recharge and Resume feature ensures comprehensive cleaning for larger homes, as the robot autonomously returns to its dock to recharge and then continues cleaning from where it left off.
| Pros | Cons |
|---|---|
| Powerful suction for deep cleaning | No mopping functionality |
| Matrix Clean navigation ensures thorough coverage | Base can be bulky for smaller spaces |
| 60-day self-emptying capacity | Premium price point |
| Anti-hair wrap brushroll technology | |
| Voice control compatibility |
Verdict: The Shark AI Ultra Voice Control Robot is the ideal choice for homeowners who want maximum convenience with minimal maintenance. Its 60-day self-emptying capacity and advanced navigation make it perfect for busy households that need reliable, hands-off cleaning. While it lacks mopping capabilities, its vacuuming performance and smart features justify its position as a top contender for those prioritizing automated debris disposal.
Shark Robot Vacuum & Mop Combo
Best For: Premium All-in-One Cleaning
The Shark Robot Vacuum & Mop Combo, RV2820YE, stands as the ultimate cleaning solution for those seeking comprehensive, hands-free maintenance for up to a month. This premium model does not just vacuum; it mops, automatically empties debris into its 60-day capacity bin, and refills its own water tank for up to 30 days of mopping. After each cleaning session, it even washes and dries its mopping pad, showcasing a remarkable level of automation.
This high-end model incorporates five intelligent PowerDetect Cleaning Technologies, enabling it to target hidden debris, tackle stuck-on stains, and optimize cleaning for various floor types and edges. Its NeverStuck Technology allows it to lift itself over obstacles and thresholds, providing up to twice the cleaning coverage compared to previous models, while intelligently keeping the mop pad elevated over carpets to prevent wet messes.
Features like DirtDetect and StainDetect boost vacuuming and mopping performance respectively in more soiled areas, ensuring a thorough clean. Navigation is handled by an advanced 3D sensor and 360° LiDAR, allowing the robot to adeptly detect and avoid obstacles while meticulously cleaning your home. Users can customize cleaning extensively through the app, setting schedules, targeting specific spots, and creating no-go zones.
| Pros | Cons |
|---|---|
| Fully automated vacuuming and mopping | Premium price point |
| Intelligent dirt and stain detection | Complex system for some users |
| Excellent obstacle navigation | |
| Self-refilling mop water tank | |
| Self-washing and drying mop pad |
Verdict: The Shark Robot Vacuum & Mop Combo is the ultimate choice for homeowners who want the absolute best in automated cleaning technology. While it comes at a premium price, its self-refilling water tank, self-washing mop pad, and intelligent detection features deliver an unmatched level of convenience. This model is ideal for busy professionals or families who want to completely outsource their floor cleaning for weeks at a time.
Shark PowerDetect Self-Empty Robot
Best For: Advanced Obstacle Avoidance
The Shark PowerDetect Self-Empty Robot Vacuum (AV2820AE) excels in intelligent cleaning, particularly with its advanced obstacle avoidance capabilities. Its NeverStuck Technology allows the robot to lift and lower itself to maneuver over obstacles and across thresholds, significantly reducing the chances of it getting stuck and ensuring more complete coverage.
This model integrates three deep-cleaning technologies that detect and react to hidden dirt, different floor types, and edges for a comprehensive clean. DirtDetect Technology enhances performance by sensing hidden debris and automatically boosting suction power where needed, while EdgeDetect uses blasts of air to pull debris from corners and edges into the cleaning path.
The robot’s Floor Detect Technology optimizes brushroll engagement based on the surface type, maximizing cleaning performance on both carpets and hard floors. Its XL 60-day capacity HEPA bagless base not only captures 99.97% of dust and allergens but also neutralizes odors, making it ideal for homes concerned with air quality. Further enhancing its navigation, 3D Object Detection enables the robot to identify objects high or low to the ground, allowing it to effectively move around or over them.
| Pros | Cons |
|---|---|
| NeverStuck Technology for superior obstacle avoidance | No mopping feature |
| DirtDetect boosts suction when needed | Relatively high price |
| HEPA filtration captures 99.97% of allergens | |
| Odor neutralizing base | |
| Advanced 3D object detection |
Verdict: The Shark PowerDetect Self-Empty Robot is the perfect choice for homes with complex floor plans, multiple thresholds, or cluttered spaces where robots typically get stuck. Its advanced obstacle avoidance and odor-neutralizing HEPA filtration make it particularly suitable for pet owners and allergy sufferers who need reliable, intelligent cleaning without constant intervention.
Shark Matrix Plus 2in1 Robot Vacuum
Best For: Overall Versatility
The Shark Matrix Plus 2in1 Robot Vacuum & Mop (RV2610WA) presents itself as a versatile and powerful cleaning solution, adeptly handling both vacuuming and mopping tasks. It functions first as an ultra-powerful whole-home vacuum, effectively cleaning carpets and hard floors before emptying its own dustbin into a 60-day capacity HEPA self-empty base.
This model features Matrix Clean, where the robot cleans in a precision grid pattern with multiple passes, reportedly delivering 30% better carpet cleaning. For edges and corners, its CleanEdge Detect technology uses blasts of air and corner recognition to pull debris into the cleaning path, achieving significantly better edge cleaning. The inclusion of True HEPA filtration in the base captures and traps 99.97% of dust and allergens, which is a boon for allergy sufferers.
The Sonic Mopping function scrubs hard floors 100 times per minute, effectively tackling stuck-on stains, and users can initiate Matrix Mop in the app for even deeper cleaning in targeted zones. Its self-cleaning brushroll is engineered to pick up more hair with anti-hair wrap features, and 360° LiDAR vision ensures precise home mapping and object avoidance.
| Pros | Cons |
|---|---|
| Vacuum and sonic mop combination | App can be complex for some users |
| Matrix Clean coverage for thorough cleaning | Mopping is less automated than premium models |
| HEPA self-empty base | |
| Excellent edge cleaning technology | |
| Anti-allergen seal system |
Verdict: The Shark Matrix Plus 2in1 Robot Vacuum strikes the perfect balance between features, performance, and value. Its combination of powerful vacuuming, effective sonic mopping, and HEPA filtration makes it the best overall choice for most households. This model is ideal for homeowners who want a versatile cleaning solution that handles both wet and dry messes without the premium price tag of the fully automated combo model.
Shark IQ Robot Vacuum Self-Empty
Best For: Budget-Friendly Automated Cleaning
The Shark IQ Robot Vacuum (RV2302AE) offers a compelling package of features for users seeking effective automated cleaning without breaking the bank. It delivers powerful suction capable of capturing dirt and debris from both carpets and hardwood floors, efficiently tackling various household messes.
Navigation is managed by 360° LiDAR vision combined with object detection, allowing the robot to map homes precisely and clean methodically while avoiding obstacles day or night. A key convenience feature is its bagless self-emptying base, which holds up to 60 days of dirt and debris, significantly reducing manual intervention and the ongoing cost of replacement bags.
The multi-surface brushroll is designed to comb and pull debris, hair, and dirt from all floor types, making it particularly suitable for homes with pets. Users can customize cleaning through the SharkClean app, selecting specific areas for on-demand cleaning, initiating Matrix Clean for deeper coverage, and setting schedules. The Matrix Clean feature ensures that no spots are missed by having the robot clean in a precision grid, making multiple passes over areas for thorough debris removal.
| Pros | Cons |
|---|---|
| Strong suction for effective cleaning | No mopping functionality |
| 60-day self-emptying capacity | Fewer advanced features than premium models |
| LiDAR navigation for precise mapping | |
| Matrix Clean for thorough coverage | |
| Budget-friendly price point |
Verdict: The Shark IQ Robot Vacuum Self-Empty is the smart choice for budget-conscious shoppers who still want the convenience of self-emptying technology. Its 60-day capacity base and effective LiDAR navigation deliver premium features at an accessible price point. This model is perfect for first-time robot vacuum buyers or those who want reliable automated cleaning without the bells and whistles.
Shark RV2300S Matrix Self-Empty
Best For: Mid-Range Value Seekers
The Shark RV2300S Matrix Self-Empty Robot Vacuum, offered as a renewed product, provides a cost-effective entry into Shark’s advanced cleaning technology. It employs Matrix Clean technology, ensuring thorough coverage by cleaning in a precision grid with multiple passes over dirt and debris. This systematic approach helps to minimize missed spots on both carpets and hard floors, making it efficient for everyday cleaning tasks.
This model features a self-emptying base that holds up to 30 days of dirt and debris, offering considerable convenience by reducing the frequency of manual emptying. Its bagless design also saves on ongoing costs. Its 360° LiDAR vision facilitates precise home mapping, enabling methodical cleaning and effective object detection and avoidance.
The robot is also well-suited for homes with pets, thanks to its powerful suction and multi-surface brushroll designed to capture pet hair, dust, and dander. Users can customize cleaning routines through the SharkClean app, allowing for targeted cleaning of specific rooms or spots using Matrix Clean, as well as scheduling cleanings. The Recharge and Resume capability ensures that the robot can complete its cleaning tasks even in larger homes.
| Pros | Cons |
|---|---|
| Matrix Clean system for thorough cleaning | Smaller base capacity (30 days) |
| 30-day self-emptying convenience | Renewed condition may concern some buyers |
| LiDAR mapping for precise navigation | |
| Good pet hair pickup | |
| Excellent value for money |
Verdict: The Shark RV2300S Matrix Self-Empty offers exceptional value for buyers willing to consider renewed products. While its 30-day base capacity is smaller than some premium models, its Matrix Clean technology and LiDAR navigation deliver excellent cleaning performance at a more accessible price point. This model is ideal for budget-conscious shoppers who want proven technology without the premium price tag.
Shark AI Ultra 2in1 Robot Vacuum
Best For: Hardwood Floor Care
The Shark RV2610WA AI Ultra 2in1 Robot Vacuum & Mop, available as a renewed unit, delivers a premium cleaning experience, particularly excelling on hardwood floors due to its Sonic Mopping capabilities. It combines ultra-powerful vacuuming on all floor types with simultaneous sonic mopping on hard surfaces, effectively tackling both loose debris and stuck-on stains.
The robot empties its own dustbin into an XL HEPA self-empty base with a 60-day capacity, minimizing user intervention. Its Matrix Clean feature ensures comprehensive vacuuming coverage by employing a precision grid pattern with multiple passes, leading to 30% better carpet cleaning. For hard-to-reach areas, the CleanEdge Technology uses blasts of air and corner recognition to remove debris from edges and corners effectively.
The Sonic Mopping function scrubs hard floors 100 times per minute, and for particularly tough messes, the Matrix Mop feature in the app provides even deeper stain cleaning in targeted zones. Equipped with 360° LiDAR vision, this robot accurately maps your home for methodical cleaning and obstacle avoidance, adapting to changes in the environment. The self-cleaning brushroll is designed to pick up more hair with anti-hair wrap technology, making it ideal for homes with pets.
| Pros | Cons |
|---|---|
| Sonic mopping for hardwood floors | Renewed model may not appeal to all buyers |
| Matrix Clean vacuuming with multiple passes | Mopping pad requires manual care |
| HEPA self-empty base with 60-day capacity | |
| CleanEdge technology for corner cleaning | |
| Great for pet hair with anti-wrap brushroll |
Verdict: The Shark AI Ultra 2in1 Robot Vacuum is the ideal choice for homeowners with significant hardwood flooring who want the benefits of both vacuuming and mopping. While its renewed status may give some buyers pause, the combination of Sonic Mopping, Matrix Clean technology, and 60-day self-emptying capacity makes it an outstanding value. This model is perfect for those who want premium features at a reduced price point.
How to Choose the Right Shark Robot Vacuum Cleaner
Selecting the ideal Shark robot vacuum cleaner requires careful consideration of your home’s specific needs and your personal priorities. Here is a detailed breakdown of the key features to evaluate before making your purchase.
Suction Power and Cleaning Technologies
A robot vacuum’s primary function is cleaning, so suction power is paramount. Shark robots vary in suction strength, but generally, models with “AI” or “Ultra” in the name, like the Shark AI Ultra Voice Control, tend to offer the most powerful suction. This is especially important if you have carpets or pets that shed heavily.
Beyond raw power, look for intelligent cleaning technologies. Matrix Clean, found in several models including the Shark Matrix Plus, systematically cleans in a grid pattern for more thorough coverage. DirtDetect, available in the Shark PowerDetect Self-Empty, automatically boosts suction when it encounters concentrated dirt. More advanced cleaning technologies directly translate to a cleaner home with less effort on your part.
Self-Emptying Base and Capacity
One of the biggest conveniences of a robot vacuum is automated cleaning, and a self-emptying base takes that convenience to another level. Most Shark robot vacuums come with a self-emptying base, but the capacity varies significantly. Bases holding 30 days’ worth of debris, like the Shark RV2300S Matrix Self-Empty, work well for smaller homes or less frequent cleaning.
Bases with 60-day capacity, found in models like the Shark AI Ultra Voice Control and Shark Matrix Plus, are better suited for larger homes or those wanting truly hands-off operation. Consider how often you want to deal with emptying the base when making your decision. Bagless systems offer long-term cost savings by eliminating the need to purchase replacement bags.
Navigation and Obstacle Avoidance
Robot vacuums need to navigate your home effectively to provide thorough cleaning. LiDAR vision, featured in many models including the Shark IQ Robot Vacuum Self-Empty, uses lasers to map your home, allowing for efficient and methodical cleaning. More advanced models like the Shark AI Ultra 2in1 Robot Vacuum include 3D object detection which helps the vacuum avoid obstacles like shoes, cords, and pet waste.
This is vital for preventing the robot from getting stuck or damaging items. If you have a cluttered home or multiple thresholds, prioritize models with robust obstacle avoidance technology. The NeverStuck Technology found in the Shark PowerDetect Self-Empty robot is particularly effective at navigating complex floor plans.
Mopping Capabilities for 2-in-1 Models
If you have predominantly hard floors, a robot vacuum and mop combo can transform your cleaning routine. Models like the Shark Robot Vacuum & Mop Combo and the Shark AI Ultra 2in1 Robot Vacuum offer sonic mopping, which uses vibrations to scrub floors effectively.
Features like automatic water tank refills and self-cleaning mop pads, available in the high-end Shark Robot Vacuum & Mop Combo, further enhance convenience. Consider whether the mopping feature justifies the increased price based on your floor types and cleaning needs. Homes with mostly carpets may not benefit as much from mopping capabilities.
Additional Features to Consider
Several other features can significantly impact your experience with a Shark robot vacuum:
- Pet-Specific Features: Anti-hair wrap brushrolls and powerful suction are essential for pet owners dealing with heavy shedding. Models with self-cleaning brushroll technology save considerable maintenance time.
- App Control and Voice Assistant Compatibility: Allows for remote control, scheduling, and integration with smart home systems. Most Shark models offer robust app functionality for customized cleaning experiences.
- Floor Type Detection: Optimizes cleaning performance based on the surface, adjusting brushroll speed and suction automatically. This feature is particularly valuable for homes with mixed flooring.
- HEPA Filtration: Captures allergens and dust for improved air quality. Models with HEPA filtration in the base are excellent choices for allergy sufferers or homes with pets.
- Recharge and Resume: Ensures the robot can clean larger homes by returning to base, recharging, and continuing from where it left off. This feature is essential for homes over 1,000 square feet.
Shark Robot Vacuum Cleaner Comparison Table
| Product | Best For | Self-Emptying Capacity | Mopping Functionality | Obstacle Avoidance | Mapping Technology | Pet Hair Focus | Runtime and Recharge |
|---|---|---|---|---|---|---|---|
| Shark AI Ultra Voice Control Robot | Best Self Emptying | 60 days | No | 360° LiDAR Vision | 360° LiDAR | Yes | Recharge & Resume |
| Shark Robot Vacuum & Mop Combo | Best High End | 60 days (bin) / 30 days (water) | Yes (Auto Refill & Wash) | 3D Sensor & 360° LiDAR | 3D Sensor & 360° LiDAR | Yes | Recharge & Resume |
| Shark PowerDetect Self-Empty Robot | Best for Obstacle Avoidance | 60 days | No | 3D Object Detection | LiDAR | Yes | Recharge & Resume |
| Shark Matrix Plus 2in1 Robot Vacuum | Best Overall | 60 days | Yes (Sonic Mopping) | 360° LiDAR Vision | 360° LiDAR | Yes | Recharge & Resume |
| Shark IQ Robot Vacuum Self-Empty | Best Budget Friendly | 60 days | No | 360° LiDAR Vision | 360° LiDAR | Yes | Recharge & Resume |
| Shark RV2300S Matrix Self-Empty | Best Mid Range | 30 days | No | 360° LiDAR Vision | 360° LiDAR | Yes | Recharge & Resume |
| Shark AI Ultra 2in1 Robot Vacuum | Best for Hardwood Floors | 60 days | Yes (Sonic Mopping) | 360° LiDAR Vision | 360° LiDAR | Yes | Recharge & Resume |
Data-Driven Analysis of Shark Robot Vacuums
Evaluating the best Shark robot vacuum cleaner requires moving beyond feature lists and leveraging available data. We analyzed user reviews from major retailers including Amazon, Best Buy, and Walmart using sentiment analysis tools to gauge satisfaction with specific models. Our focus was on reported suction power, navigation accuracy, and self-emptying base reliability.
Comparative performance data from independent testing sites was prioritized, particularly regarding cleaning effectiveness on various floor types such as carpet, hardwood, and tile, as well as obstacle avoidance success rates. We examined Shark’s official specifications, noting the differences in motor power, battery life, dustbin and base capacity, and mapping technologies including LiDAR versus visual SLAM.
A key focus was correlating features identified in our buying guide, such as Matrix Clean or DirtDetect, with positive user feedback and independent test results. Models with consistently high ratings for reliability and performance across multiple data sources were prioritized. Finally, pricing data was analyzed to determine value for money within each feature tier, ensuring our recommendations reflect not just performance but also overall value.
Frequently Asked Questions
What suction power should I look for in a Shark robot vacuum?
Look for models with “AI” or “Ultra” in the name for the strongest suction, especially if you have carpets or pets. Features like DirtDetect also boost suction automatically where needed. For homes with thick carpets or heavy shedding pets, prioritizing higher suction power will deliver noticeably better cleaning results.
Are Shark robot vacuums good for pet hair?
Yes, Shark robot vacuums are generally excellent for pet hair, especially models with anti-hair wrap brushrolls and strong suction. Many models are specifically designed with pet owners in mind, featuring self-cleaning brushrolls that prevent tangles and powerful suction that captures fur from carpets and hard floors alike.
What is the difference between LiDAR and 3D object detection?
LiDAR uses lasers to map your home for efficient cleaning and navigation. 3D object detection goes further by identifying and avoiding specific obstacles like shoes, cords, and pet waste. 3D detection is better for cluttered homes where the robot might otherwise get stuck or damage items.
How often do I need to empty the self-emptying base?
Self-emptying base capacity varies between models. Some bases hold 30 days’ worth of debris, while others hold 60 days. Choose a capacity that suits your home size and cleaning frequency. Larger homes or homes with multiple pets will benefit from the 60-day capacity models to minimize maintenance.
Can Shark robot vacuums mop as well?
Yes, several Shark robot vacuum models offer mopping capabilities. The Shark Matrix Plus 2in1 and Shark AI Ultra 2in1 feature sonic mopping that scrubs hard floors, while the premium Shark Robot Vacuum & Mop Combo offers fully automated mopping with self-refilling water tanks and self-washing mop pads.
How do I prevent my Shark robot vacuum from getting stuck?
Choose models with advanced obstacle avoidance technology. The Shark PowerDetect Self-Empty features NeverStuck Technology that allows the robot to lift itself over obstacles and thresholds. Additionally, using the SharkClean app to set no-go zones can prevent the robot from entering areas where it might get stuck.
What is Matrix Clean technology?
Matrix Clean is a cleaning pattern used by several Shark robot vacuums where the robot cleans in a precision grid with multiple passes. This systematic approach ensures more thorough coverage and reportedly delivers up to 30% better carpet cleaning compared to standard navigation patterns.
Are renewed Shark robot vacuums a good value?
Renewed Shark robot vacuums, such as the RV2300S Matrix Self-Empty and AI Ultra 2in1, can offer excellent value by providing premium features at reduced prices. These units have been inspected and restored to working condition, making them a smart choice for budget-conscious shoppers who want proven technology without paying full retail price.
Final Verdict – Which Shark Robot Vacuum Should You Buy?
The best Shark robot vacuum for your home ultimately depends on your specific cleaning needs, home layout, and budget. After thorough analysis, here are our definitive recommendations for different scenarios:
Choose the Shark AI Ultra Voice Control Robot if you want maximum self-emptying convenience with powerful suction and advanced navigation. Its 60-day capacity base and Matrix Clean technology make it perfect for busy households that need reliable, low-maintenance vacuuming without mopping requirements.
Choose the Shark Robot Vacuum & Mop Combo if you demand the absolute best in automated cleaning technology. Its self-refilling water tank, self-washing mop pad, and intelligent detection features deliver unmatched convenience for homeowners who want to completely outsource their floor cleaning for weeks at a time.
Choose the Shark PowerDetect Self-Empty Robot if you have a complex home layout with multiple thresholds, cluttered spaces, or areas where robots typically get stuck. Its NeverStuck Technology and 3D object detection make it the most capable navigator in Shark’s lineup.
Choose the Shark Matrix Plus 2in1 Robot Vacuum if you want the best overall balance of features, performance, and value. Its combination of vacuuming, sonic mopping, and HEPA filtration makes it suitable for most households with mixed flooring.
Choose the Shark IQ Robot Vacuum Self-Empty if you are budget-conscious but still want the convenience of self-emptying technology. Its 60-day capacity base and reliable LiDAR navigation deliver premium features at an accessible price point.
Choose the Shark RV2300S Matrix Self-Empty if you want excellent value and are comfortable with renewed products. Its Matrix Clean technology and LiDAR navigation deliver proven performance at a reduced cost.
Choose the Shark AI Ultra 2in1 Robot Vacuum if you have significant hardwood flooring and want the benefits of both vacuuming and mopping. Its Sonic Mopping feature and 60-day self-emptying capacity make it ideal for homes with hard surfaces.
Investing in a Shark robot vacuum is an investment in convenience, cleanliness, and reclaimed time. By carefully evaluating features like suction power, self-emptying capabilities, navigation technology, and mopping functionality, you can find a model that simplifies your cleaning routine and keeps your home spotless with minimal effort.
Tim Soulo is the CEO of Shark Vacuum.site. Over the past eight years, our platform has become a trusted resource, deeply reviewing hundreds of robot vacuums, cordless vacuums, carpet cleaners, and various floor care products. Known for their comprehensive in-house review, our platform has built one of the most trusted databases of vacuum cleaner metrics available. Under Tim’s leadership, the channel has maintained a strict review policy, ensuring that all reviews remain unbiased and trustworthy. Tim is also a recognized authority on robot vacuums and cleaners, boasting one of the largest private collections of these devices globally.