Roborock Saros Z70 – a robot vacuum with an arm that picks up your socks
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Every robot vacuum owner knows the ritual. Before you press start, you walk around the house picking up socks, charging cables and that one slipper, because the robot will eat them or get stuck on them. You end up doing the tidying so the robot can do the vacuuming.
The Roborock Saros Z70 is a robot vacuum with an arm. A small mechanical arm folds out of its top, picks up the sock, drops it where you told it to, and then goes back to cleaning the spot where the sock was.
Yes, it’s a lot of robot for a sock. I still want to watch it do it.
What is the Roborock Saros Z70?
Roborock showed the Saros Z70 at CES in January 2025 and calls it the first mass-produced robot vacuum with a foldable mechanical arm. Under the arm sits a regular high-end robot vacuum and mop: 22,000 Pa of suction, two spinning mops and a big dock that washes the mops with hot water, dries them with warm air and empties the dust bin for about seven weeks.
When it isn’t grabbing things, the arm folds flat into the body. The whole robot is still only 3.14 inches tall, and Roborock says that’s low enough to get under most furniture.
How does the robot vacuum with an arm work?
The arm is called OmniGrip. It has five axes, its own camera and an LED light, plus a weight sensor in the gripper. On paper it works like this:
- On the first pass the robot spots objects on the floor. Out of the box it knows 108 types of objects, and you can teach it up to 50 more in the app.
- Things that weigh up to 300 grams (about 10.5 ounces) can be lifted. That covers socks, slippers, tissues and small towels. Heavier stuff gets left alone, so your cat is safe.
- It carries each item to a spot you pick in the Roborock app, then comes back to clean the floor underneath.
You can also drive the arm yourself from the app, which is either very useful or the start of a lot of nonsense at 11 p.m.
The good and the not-so-good
The good:
- It goes after the pre-cleaning chore itself, not only the floor.
- The cleaning side is strong. José Adorno at BGR called it great at vacuuming and mopping.
- The dock does almost all the gross jobs: hot water mop washing, drying and dust emptying.
The not-so-good:
- The arm is slow. BGR describes it as taking a while to unfold and being “very careful” with every pickup. Cleaning runs take longer than on Roborock’s earlier robots because of that.
- It has blind spots. In BGR’s review it grabbed napkins and flip-flops fine, but it struggled with very small or shiny objects and things close to walls.
- It launched at 2,599 bucks. BGR’s verdict was that early adopters should wait, since the Saros 10R cleans just as well for over a thousand dollars less.
- It only connects to 2.4 GHz Wi-Fi.
Who is the Roborock Saros Z70 for?
Homes where stuff ends up on the floor all day: kids, teenagers, pets that drag toys around, or one adult who treats the bedroom floor as a closet. If you already pick up before every run and don’t mind it, the arm is a party trick you pay a lot for. A regular robot vacuum, or even a vacuum that’s also a broom, will get you clean floors for a lot less.
It belongs to the same weird family as Samsung’s rolling Ballie robot, except you can actually buy this one.
Where can I buy the Roborock Saros Z70?
Roborock sells the Saros Z70 on Amazon US in black (the version below) and silver. The price has moved around a lot since launch, especially during sales, so check the current price before you buy.
A robot that tidies up so it can clean up. Take my money.