Roborock Saros Z70 Robot Vacuum with OmniGrip Arm

Overview

The Roborock Saros Z70 is the first consumer robot vacuum with a mechanical arm. The OmniGrip arm can pick up socks, shoes, and small items from the floor before vacuuming. It won Vacuum Wars' Most Innovative award for 2025 and it has the best obstacle avoidance of any robot vacuum at 99.8%. As a vacuum and mop, it's excellent. The arm is another story.

The arm works about half the time. Vacuum Wars ran 40+ tests and got mixed results. Sometimes it picks things up and puts them where you want. Sometimes it drops them. Sometimes it doesn't recognize the object at all. It currently handles three categories: clumps (like balled-up tissues), fabrics (socks, small towels), and specific types of slides/slippers. That's it. Regular shoes, toys, cables, and everything else on your floor are ignored.

Best Robot Vacuums scored it 8.2/10 and called it "a fascinating product that is easier to admire than to recommend." TechRadar's reviewer couldn't get the arm to automatically pick up anything at all. It's a first-generation feature, and it shows.

Key Features

The five-axis OmniGrip arm extends when the robot's camera detects a recognized object. In the app, you can set a drop-off location (like a basket) where the robot deposits collected items. There's also a manual mode where you use the app's live camera feed to control the arm remotely and grab anything under 300 grams.

As a vacuum, it has 22,000 Pa suction and a 3.14-inch slim body with retractable LiDAR. The FlexiArm design extends both the side brush and mop pad beyond the robot's footprint for better edge cleaning. The dock does hot water mop washing, hot air drying, auto-emptying, and auto water refilling. There's even an optional direct plumbing hookup so you never have to fill or empty the dock's tanks.

The obstacle avoidance system is the best available. At 99.8%, it essentially never bumps into anything. This is meaningfully better than the Dreame X60 (which hit 22 of 24 test objects) and every other robot on the market.

Performance

Ignore the arm for a moment. As a vacuum and mop, the Z70 is very good. The 22,000 Pa suction handles hard floors and carpet well. The FlexiArm edge cleaning reaches spots that round-bodied robots typically miss. Multiple Amazon reviewers who came from iRobot devices say the Z70 is a huge upgrade in both vacuuming and mopping.

The 99.8% obstacle avoidance is the real selling point. If you have a messy house with cables, shoes, pet toys, and kids' stuff on the floor, the Z70 will navigate around all of it without getting stuck. The Dreame X60 and Roborock CurvX are good at avoidance, but the Z70 is the best.

Now, the arm. The honest assessment from every reviewer is the same: cool concept, inconsistent execution. One Amazon reviewer said they "literally had to pry a sock out of its cold, robotic claw." Another who has used it daily for 6 months says it works well enough for shoes and slippers but you need to clean the sensors regularly. A third reported navigation issues developing after 5 months, requiring a warranty replacement.

The 3.8 star Amazon rating (178 reviews) is the lowest among premium robot vacuums, and the arm is clearly the reason. People who love it really love it. People who expected a reliable tidying robot are disappointed.

Build Quality & Design

The build is premium Roborock quality. The materials feel solid, the dock is well-designed, and the overall fit and finish is what you'd expect at this price point. The arm mechanism adds complexity, which is a potential failure point over time, but early reliability data is limited.

The dock with direct plumbing hookup is a nice touch if you can install it near a water line. It makes the robot truly zero-maintenance for water management.

Value for Money

This is the most expensive consumer robot vacuum you can buy. The question is whether the arm justifies the premium over the Roborock Qrevo CurvX, which costs less than half as much and cleans just as well (arguably better, with a higher carpet deep clean score).

If you value the arm and understand its limitations, the Z70 offers something no other robot can do. If you care most about cleaning performance per dollar, the CurvX or Dreame X60 are both better buys.

The 99.8% obstacle avoidance is harder to dismiss. If you're tired of rescuing stuck robots, the Z70's navigation alone might be worth the upgrade for you.

Who Should Buy This

Early adopters who want the latest in home robotics. The arm is genuinely new technology, and firmware updates will improve it over time. If you're the type who bought the first Roomba in 2002, this is your kind of product.

People with consistently messy floors who are tired of pre-cleaning before running their robot. The 99.8% obstacle avoidance means you can run the Z70 without picking anything up first.

Who Should Skip This

If you want reliable, predictable cleaning at a reasonable price, the Roborock Qrevo CurvX or Dreame X60 Max Ultra are both better choices. They clean as well or better, cost significantly less, and don't have a first-gen feature that works half the time.

If the arm is the main reason you're interested, wait for the next generation. The Z70 proves the concept works. The successor will probably execute it reliably.