Introducción
The Roborock Saros Z70 and the Mova Z50 Ultra represent two of the most advanced robotic vacuum cleaners launched in 2025. Both models feature multifunction bases that handle automatic emptying, mop washing and drying, making them suitable for users seeking minimal maintenance. The Saros Z70 comes from Roborock, the world's leading brand in robotic vacuum technology, whilst Mova is a sister brand of Dreame, offering competitive specifications at different price points.
These aren't basic robot vacuums. They're designed for households that want serious cleaning performance with intelligent navigation and advanced mopping capabilities. The Saros Z70 introduces a robotic arm to the equation, whilst the Mova Z50 Ultra focuses on powerful suction and a wide roller mop system. Understanding which suits your home depends on specific needs like floor types, furniture height, and whether you have pets.
Potency and aspiration
The Roborock Saros Z70 generates 22,000 Pa of suction power, giving it a noticeable edge over the Mova Z50 Ultra's 19,000 Pa. In practical terms, this translates to better performance on carpets and when dealing with embedded dirt in textured flooring. The difference becomes especially relevant if you have medium to high-pile rugs or pets that shed heavily.
When it comes to brush design, the Saros Z70 uses an anti-tangle main brush, whilst the Mova Z50 Ultra employs the TriCut 3.0 system that combines bristles with small blades to cut through tangled hair. Both approaches reduce maintenance time, though the TriCut design has proven effective in homes with long-haired occupants or multiple pets.
Both models lift their main brushes during mopping and feature extendable side brushes that reach into corners more effectively. The side brushes also elevate when mopping and incorporate anti-tangle technology. This means you won't find major differences in how they handle edges or deal with hair wrapping around the side brush.
Mopping system
The mopping approach differs fundamentally between these two. The Saros Z70 uses dual rotating mops that spin to scrub floors, whilst the Mova Z50 Ultra relies on a single wide roller measuring 180 mm. Rotating mops tend to apply more concentrated pressure on stubborn marks, whereas a wide roller covers more surface area with each pass.
For edge cleaning, the Saros Z70 extends its mops to reach skirting boards, and the Mova Z50 Ultra includes a mini side mop for the same purpose. The execution differs, but both aim to solve the common problem of missing the edges during mopping.
Mop elevation matters if you have mixed flooring. The Saros Z70 lifts its mops between 12 and 22 mm when transitioning onto carpets, protecting your rugs from unwanted moisture. The Mova Z50 Ultra only manages 7 mm of lift. For homes with thick rugs or shag carpets, that lower lift height might not provide adequate clearance, potentially leaving damp patches on carpet edges.
The Saros Z70 can automatically detach its mops at the base when you want to run a vacuum-only session. The Mova Z50 Ultra doesn't offer this feature, meaning its roller remains attached even when you're only vacuuming. This becomes relevant if you frequently switch between mopping and dry vacuuming modes.
Both models detect dirt on their mops and on the floor itself, triggering additional cleaning passes when needed. The Saros Z70 uses warm water for mopping, whilst the Mova Z50 Ultra heats water to 35°C, offering slightly more cleaning power for greasy kitchen floors.
Navigation system
The Roborock Saros Z70 uses the StarSight 2.0 navigation system with dual AI cameras and a front-facing 3D laser sensor. It recognises 108 different obstacle types, including pets, and features LED lighting for operation in low-light conditions. The RR Mason 12.0 processor handles the SmartPlan 2.0 AI cleaning logic.
The Mova Z50 Ultra employs a 3D LiDAR turret combined with dual AI cameras and a 3D laser sensor. It identifies 160 obstacle types and specifically detects curtains, which the Saros Z70 doesn't mention. The CleanGenius AI system manages intelligent cleaning decisions. Both allow remote camera access through their respective apps.
In practice, both navigate complex homes effectively. The Mova's higher obstacle recognition count suggests it might handle cluttered spaces with slightly more precision, but the Saros Z70's processing power and navigation algorithm have a strong reputation for reliability.
Battery and autonomy
Both robots pack identical 6,400 mAh batteries. Neither manufacturer provides specific runtime figures or maximum coverage areas in the available data, so direct comparison on autonomy isn't possible here. What's clear is that both have substantial battery capacity for extended cleaning sessions before returning to base.
Intelligent features
The Roborock Saros Z70 can climb obstacles up to 22 mm in "simple mode" and includes the OmniGrip robotic arm. This arm can pick up small items like socks or lightweight toys, depositing them in a designated area rather than pushing them around or getting stuck. It's a genuinely useful feature if you have young children or frequently leave small objects on the floor.
The Mova Z50 Ultra manages 22 mm obstacles but lacks any robotic arm functionality. It focuses instead on navigation and cleaning performance without the object manipulation capabilities.
Both models feature their own voice assistants and integrate with external systems like Alexa and Google Home, giving you multiple control options.
Multifunction cleaning base
Both bases handle automatic dust emptying, mop washing with hot water, and hot air drying. The Saros Z70 washes its mops with hot water, as does the Mova Z50 Ultra. Both dry with heated air to prevent odours and bacterial growth. Each base includes a detergent dispenser that adds cleaning solution during mop washing.
The Saros Z70 features Base Cleaning 2.0, which automatically cleans the washing tray itself. The Mova Z50 Ultra doesn't include this self-cleaning function for the tray, meaning you'll need to manually clean that component periodically to prevent buildup.
Dust bag capacity differs significantly: 2.5 litres in the Saros Z70's base versus 4 litres in the Mova Z50 Ultra. If you have a large home or heavy shedding pets, the larger bag means less frequent replacements. Clean water tanks measure 4 litres and 4.5 litres respectively, whilst dirty water tanks hold 3 litres and 4 litres. The Mova's slightly larger reservoirs extend the time between refills.
Neither model offers integrated pipe connection or optional kits for plumbing integration, so both require manual water tank maintenance.
Dimensions
Height makes a substantial difference when it comes to cleaning under furniture. The Roborock Saros Z70 measures just 79.8 mm tall, allowing it to slip beneath most sofas, beds, and low-clearance cabinets. The Mova Z50 Ultra stands 111 mm high, which limits access to lower spaces. If you have furniture with ground clearance below 115 mm, the Saros Z70 will reach areas the Mova simply can't access.
Diameter is nearly identical: 353 mm for the Saros Z70 and 350 mm for the Mova Z50 Ultra. Neither has an advantage navigating tight spaces.
The Saros Z70's base measures 381 mm wide, 488 mm tall, and 475 mm deep. The Mova Z50 Ultra's base is 390 mm wide, 545 mm tall, and 463.3 mm deep. The Mova base is taller but slightly shallower, whilst the Saros Z70 base sits lower but extends further from the wall. Consider your available floor space when choosing where to position the base.
Real-world usage experience
For homes with low-profile furniture, the Saros Z70's 79.8 mm height provides a clear advantage. It'll clean under beds, sofas, and cabinets that the taller Mova Z50 Ultra simply can't reach. This becomes particularly valuable in bedrooms and living areas with modern, low-clearance furniture.
Pet owners benefit from both models' anti-tangle brushes and strong suction, but the Saros Z70's higher 22,000 Pa power gives it an edge with embedded pet hair in carpets. The OmniGrip arm also means it can pick up small pet toys rather than pushing them around, reducing stuck situations.
The Saros Z70's ability to automatically remove its mops at the base streamlines the workflow if you regularly alternate between mopping and vacuuming. The Mova requires manual mop removal or leaves the roller attached during vacuum-only sessions.
For larger homes, the Mova Z50 Ultra's bigger dust bag (4 litres versus 2.5 litres) and slightly larger water tanks reduce maintenance frequency. You'll empty bags and refill tanks less often, which matters if you're cleaning 150+ square metres regularly.
The Mova's recognition of 160 obstacle types, including specific curtain detection, suggests slightly more refined navigation in heavily furnished spaces. However, the Saros Z70's StarSight 2.0 system and RR Mason 12.0 processor deliver Roborock's proven reliability.
Conclusion: which should you choose?
Choose the Roborock Saros Z70 if: you have furniture with low clearance and need a robot that can clean underneath without getting stuck. The 79.8 mm height is a genuine advantage. The OmniGrip robotic arm appeals if you have young children or frequently leave small items on floors. You value the convenience of automatic mop removal for vacuum-only sessions, and the Base Cleaning 2.0 feature reduces manual maintenance. The 22,000 Pa suction suits homes with thick carpets or heavy pet hair. Roborock's reputation for reliability and app quality matters to you.
Choose the Mova Z50 Ultra if: you don't have particularly low furniture and the 111 mm height isn't a limitation. The wide roller mop system appeals for its coverage area, and you prefer the TriCut 3.0 brush design. The larger 4-litre dust bag and bigger water tanks reduce maintenance frequency in larger homes. You want slightly hotter mopping water at 35°C. The recognition of 160 obstacle types, including curtains, suggests strong navigation in complex environments. You're looking for competitive specifications at what may be a lower price point than Roborock's flagship model.
The Saros Z70 suits those prioritising access to low spaces, maximum suction power, and innovative features like the robotic arm. The Mova Z50 Ultra appeals to users wanting lower maintenance frequency and strong all-round performance without needing the absolute lowest profile.
