Roborock RockMow Z120 LiDAR: lawn size, slope and specs
Recommended for lawns up to 2,000 m² (21,530 sq ft) and slopes up to 80% (38.7°). Works without a boundary wire and steers by LiDAR and a camera.
Updated
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The Roborock RockMow Z120 LiDAR on your lawn
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Key numbers
What it needs
- Boundary wire
- None
- Sky
- No satellite view needed
- Installation
- Not published
Sized for
Lawns of about 1,600 to 2,000 m² (17,220 to 21,530 sq ft). That is the limit the sizer allows (1.2 times the recommended size) divided by 1.5 for a complex lawn and by 1.2 for an open one, the margins the mower sizer adds for the shape of the lawn.
Slopes up to 75% pass with room to spare. From there to its 80% rating it is at its limit, and steeper ground rules it out. The methodology states both rules.
Full specifications
- Rated area
- 2,000 m² (21,530 sq ft)the size the maker recommends
- Steepest slope
- 80% (38.7°)
- Navigation
- No wire, LiDAR and camera
- Boundary wire
- Not needed
- Camera
- Yes
- LiDAR
- Yes
- Cutting width
- 240 mm (9.4 in)
- Cutting height
- US: 41 to 89 mm (1.6 to 3.5 in)
- UK: 20 to 70 mm (0.8 to 2.8 in)
- EU: 20 to 70 mm (0.8 to 2.8 in)
- Height adjustment
- Electric
- Drive
- All wheel drive
- Separate lawn areas
- Yes
- Mowing time per charge
- 110 min
- Charging time
- 50 min
- Weight
- 21.7 kg (47.8 lb)
- Water protection
- IPX6
- Obstacle sensing
- LiDAR and camera with object recognition
- Connections
- Wi-Fi, Bluetooth and cellular
- Theft protection
- Alarm, PIN code, GPS tracking, geofence and lift sensor
- Warranty
- 3 years
- Installation
- Not published
- Sold in
- US, UK and EU
- Market names
- RockMow X120H LiDAR in the US
Price by region
| Market | Price | Maker's page |
|---|---|---|
| United States | $2,299 price on the maker's page as of October 2026 | Roborock US page for the RockMow X120H LiDAR (opens in a new tab) |
| United Kingdom | No price published | Roborock UK page for the RockMow Z120 LiDAR (opens in a new tab) |
| European Union | No price published | Roborock EU page for the RockMow Z120 LiDAR (opens in a new tab) |
Botsize may earn a commission when you buy through links on this page. It never changes the math or the ranking.
Prices are the maker's own, in each market's currency and never converted. Each is a snapshot from the month shown, and sales change them.
Alternatives
One size down from Roborock
Recommended for lawns up to 1,500 m² (16,150 sq ft), slopes up to 80%. No wire, satellite positioning.
One size up from Roborock
Recommended for lawns up to 3,000 m² (32,290 sq ft), slopes up to 80%. No wire, satellite positioning.
Closest rating from another brand, same kind of navigation
Rated for lawns up to 2,000 m² (21,530 sq ft), slopes up to 45%. No wire, LiDAR and camera.
Closest rating from another brand, same kind of navigation
Rated for lawns up to 3,000 m² (32,290 sq ft), slopes up to 50%. No wire, LiDAR and camera.
Sources
Every number on this page comes from these pages, read on the date shown. Botsize reads specifications and does not test mowers.
- Roborock specification sheet for the RockMow Z120 LiDAR, on garden.roborock.com, read on
- Roborock specification sheet for the RockMow Z120 LiDAR, on garden.roborock.com, read on
- Roborock product page for the RockMow Z120 LiDAR, on garden.roborock.com, read on
- Roborock support page for the RockMow Z120 LiDAR, on garden.roborock.com, read on
- Roborock support page for the RockMow Z120 LiDAR, on garden.roborock.com, read on
- Roborock support page for the RockMow Z120 LiDAR, on garden-support.roborock.com, read on