Introduction
The Roborock Saros Z70, Mova V50 Ultra, and Dreame X50 Ultra Blanca represent the cutting edge of what's available in 2025. All three are premium robot vacuum cleaners with multifunctional bases that handle both vacuuming and mopping with advanced automation. These aren't entry-level devices—they're designed for users who want minimal intervention and maximum cleaning performance.
The Roborock Saros Z70 brings Roborock's flagship technology to the table, including a unique robotic arm for obstacle handling. The Mova V50 Ultra, from Dreame's secondary brand, offers impressive specifications at a competitive price point. The Dreame X50 Ultra Blanca rounds out the trio with Dreame's latest AI-powered cleaning intelligence. Each targets homeowners with larger properties who value thorough mopping alongside powerful vacuuming.
Differences Key in a Glance
- Suction power varies: 22,000 Pa (Roborock), 24,000 Pa (Mova), 20,000 Pa (Dreame)
- Only the Roborock Saros Z70 features a robotic arm (OmniGrip)
- Brush systems differ: Roborock uses an anti-tangle design whilst Mova and Dreame employ dual HyperStream brushes
- Mopping extension technology: Roborock has standard extension, whilst Mova and Dreame include RoboSwing movement
- Floor mopping temperature: Roborock uses warm water, Mova uses hot water, Dreame uses cold water
- Mop lift height: Roborock achieves 12-22 mm, whilst Mova and Dreame reach 10.5 mm
- UV disinfection present only in Mova and Dreame bases
- Detergent systems: Mova features dual tanks, others have single tanks
- Dust bag capacity: 2.5L (Roborock) versus 3.2L (Mova and Dreame)
- Object recognition: Roborock identifies 108 obstacles, Mova and Dreame recognise 200
- Curtain detection available only on Mova and Dreame models
- Robot height: Roborock measures 79.8 mm, making it noticeably lower than the others at roughly 89 mm
Suction Power and Brushing
Suction strength sits at 22,000 Pa for the Roborock Saros Z70, 24,000 Pa for the Mova V50 Ultra, and 20,000 Pa for the Dreame X50 Ultra Blanca. In practical terms, the Mova edges ahead here, though all three deliver more than enough power for typical household debris, pet hair, and embedded dirt in carpets.
The brush configuration reveals a more significant distinction. Roborock equips the Saros Z70 with an anti-tangle main brush designed to minimise hair wrap, whilst both the Mova V50 Ultra and Dreame X50 Ultra Blanca feature dual HyperStream brushes. This HyperStream design anchors two brushes at one end, creating a floating action that actively prevents hair entanglement—particularly beneficial for homes with long-haired pets or family members.
All three models include side brushes that extend to reach corners more effectively and lift when mopping to avoid contaminating wet floors. They also incorporate anti-tangle technology in the side brushes. The main brushes can elevate during mopping sessions across all three, preventing wet bristles from dragging across carpets.
Mopping Performance
Each robot uses dual rotating mops for thorough floor cleaning. The Roborock Saros Z70 extends its mops to clean edges, whilst the Mova V50 Ultra and Dreame X50 Ultra Blanca take this further with RoboSwing—a swaying motion that pushes the mop slightly under furniture edges and skirting boards.
Mop elevation differs meaningfully. The Roborock lifts its mops between 12 and 22 mm, providing greater clearance for thicker carpets and rugs. The Mova and Dreame models lift to 10.5 mm, which handles most standard carpets but may struggle with particularly plush flooring.
Water temperature during floor mopping separates these models noticeably. The Roborock Saros Z70 uses warm water for cleaning, the Mova V50 Ultra employs hot water, and the Dreame X50 Ultra Blanca relies on cold water. Hot water generally breaks down grease and stubborn marks more effectively, giving the Mova an advantage for kitchens and high-traffic areas.
All three bases wash the mops with hot water and dry them using hot air, which helps prevent odours and bacterial growth. They can automatically remove mops at the base when you want vacuum-only operation, and they detect dirt on both the mops and the floor to trigger additional cleaning passes when needed.
Navigation Systems
The Roborock Saros Z70 uses StarSight 2.0 navigation, whilst the Mova V50 Ultra and Dreame X50 Ultra Blanca employ retractable LiDAR systems. All three feature dual AI cameras and front-facing 3D laser sensors for obstacle detection, plus LED lighting for navigation in low-light conditions.
Object recognition capability varies significantly. The Roborock can identify 108 different obstacles, whilst both the Mova and Dreame recognise up to 200 objects. This broader recognition helps the latter two navigate more complex environments with greater confidence, avoiding items like shoes, cables, and pet toys more reliably.
Curtain detection appears only on the Mova V50 Ultra and Dreame X50 Ultra Blanca. This feature prevents the robots from becoming entangled in hanging fabric—a useful addition if you have floor-length curtains or draped textiles. All three models recognise pets and offer remote camera access for home monitoring when you're away.
The Roborock runs RR Mason 12.0 processing, whilst the Dreame operates on AI Sage 13.0 with DualAI. Processing information for the Mova wasn't specified in the available data. The Roborock uses SmartPlan AI for intelligent cleaning routines, whereas both Mova and Dreame utilise CleanGenius AI systems.
Battery and Autonomy
Battery capacity matches across all three at 6,400 mAh. Autonomy figures show the Mova V50 Ultra running for 220 minutes and the Dreame X50 Ultra Blanca for 180 minutes. The Roborock Saros Z70 doesn't provide specific runtime data, though the identical battery suggests comparable performance.
These runtimes translate to substantial coverage. The Mova's 220 minutes should comfortably handle larger homes in a single session, whilst the Dreame's 180 minutes remains more than adequate for most properties. All three will return to base automatically when battery runs low, recharge, and resume cleaning where they left off.
Intelligent Features
All three models can climb obstacles up to 20 mm, allowing them to transition between rooms with threshold strips and navigate over door bars without assistance.
The Roborock Saros Z70 stands apart with its OmniGrip robotic arm. This mechanical appendage can physically move small obstacles—like slippers, lightweight toys, or charging cables—out of the cleaning path. Neither the Mova V50 Ultra nor the Dreame X50 Ultra Blanca includes this technology, making the Roborock uniquely capable of clearing its own route through cluttered spaces.
Each robot includes its own voice assistant alongside compatibility with external systems like Alexa and Google Home. This allows for voice control whether you prefer the manufacturer's assistant or your existing smart home ecosystem.
Multifunctional Base Stations
All three bases automatically empty the robot's dust container, wash mops with hot water, and dry them using hot air. They also clean their own washing trays—the Roborock features version 2.0 of this technology, whilst Mova and Dreame use third-generation systems.
UV disinfection appears only in the Mova V50 Ultra and Dreame X50 Ultra Blanca bases. This feature sterilises the washing area and mops, adding an extra hygiene layer that may appeal to households with young children or allergy concerns.
Detergent storage differs notably. The Roborock Saros Z70 and Dreame X50 Ultra Blanca provide single detergent tanks, whilst the Mova V50 Ultra offers dual tanks. This dual-tank system lets you use different cleaning solutions for different floor types or cleaning tasks without manual intervention.
Dust bag capacity measures 2.5 litres in the Roborock base versus 3.2 litres in both the Mova and Dreame stations. Larger bags mean less frequent emptying, though even 2.5 litres should last several weeks in typical households.
Water tank sizes show minor variation. Clean water tanks hold 4 litres in the Roborock and Mova, and 4.5 litres in the Dreame. Dirty water capacity sits at 3 litres (Roborock), 3.5 litres (Mova), and 4 litres (Dreame). These differences rarely impact daily use, though the Dreame's slightly larger dirty water tank may require marginally less frequent emptying.
The Dreame X50 Ultra Blanca offers an optional plumbing connection kit (sold separately) for automatic water refilling and drainage. This isn't built-in, and the kit requires purchase and installation, so it's worth noting but not a core differentiator.
Physical Dimensions
Robot height matters when cleaning under furniture. The Roborock Saros Z70 measures just 79.8 mm tall, making it the lowest profile of the three. The Mova V50 Ultra stands at 89.5 mm, and the Dreame X50 Ultra Blanca at 89 mm. That roughly 10 mm difference means the Roborock can access spaces beneath lower sofas, beds, and cabinets that the others cannot reach.
Diameter varies minimally: 353 mm for the Roborock versus 350 mm for both Mova and Dreame. This 3 mm difference has no practical impact on manoeuvrability.
Base station footprints differ more substantially. The Roborock base measures 381 mm wide, 488 mm tall, and 475 mm deep. The Mova base spans 420 mm wide, 470 mm tall, and 458 mm deep. The Dreame base is narrower at 340 mm but taller at 590.5 mm, with a depth of 456.7 mm. The Dreame's vertical design saves floor space but requires more vertical clearance—something to consider if you're placing it under shelving or in a cupboard.
Real-World Usage Scenarios
For larger homes, the Mova V50 Ultra's 220-minute runtime and 3.2-litre dust bag offer practical advantages. The hot water mopping also suits kitchens and dining areas where grease and food residue accumulate. Its dual detergent tanks provide flexibility for mixed flooring types without manual tank swapping.
The Roborock Saros Z70 excels in homes with low-clearance furniture thanks to its 79.8 mm height. The robotic arm proves particularly useful in households with children or anyone who leaves items on the floor—it can move obstacles autonomously rather than simply avoiding them. The adjustable mop lift (12-22 mm) handles thicker rugs better than the competition.
Homes with pets benefit from the HyperStream dual-brush system in the Mova and Dreame models, which actively prevents hair entanglement. That said, the Roborock's anti-tangle brush also performs well, and its lower profile helps it reach pet hair accumulating under furniture.
The Dreame X50 Ultra Blanca's narrower base suits tighter installation spaces, though you'll need adequate vertical room for its taller design. The optional plumbing kit appeals to users who want complete automation, though it requires additional investment and installation effort.
All three handle hard floors, parquet, and carpets effectively. The higher suction of the Mova (24,000 Pa) provides a slight edge on deep-pile carpets, whilst the Roborock's greater mop elevation protects thicker rugs more thoroughly during mopping cycles.
Conclusion: Which to Choose?
Choose the Roborock Saros Z70 if you have substantial low-clearance furniture, want the unique robotic arm for obstacle handling, or need maximum mop lift for thick carpets. It's the best option for cluttered homes where small items frequently obstruct cleaning paths, and its lower profile accesses spaces the others simply cannot reach.
Choose the Mova V50 Ultra if you prioritise hot water mopping for superior grease removal, want the longest runtime for extensive properties, or value dual detergent tanks for different floor types. The larger dust bag and broader object recognition (200 items) add convenience for busy households, and UV disinfection appeals to hygiene-conscious users.
Choose the Dreame X50 Ultra Blanca if you need a space-saving base footprint, want the option of future plumbing integration, or prefer the largest water tanks for extended mopping sessions. Its AI Sage 13.0 processing delivers advanced cleaning intelligence, and the HyperStream brushes work brilliantly in homes with pets. The narrower base fits into tighter spaces, making it ideal for compact utility rooms or cupboards.
