Roborock Saros 20 Sonic: thresholds, height and specs
Climbs thresholds up to 1.77 in (45 mm) and stands 3.14 in (79.8 mm) tall. Its dock empties the bin, washes the mop and dries it. Vacuums and mops with a vibrating mop pad.
Updated
Will it work in your home?
FitsThe Roborock Saros 20 Sonic in your home
Fits for your home.
- Lifts the mop 0.31 in on carpet.
Compare every robot vacuum for this home, with floor area, levels, pets, dock space and budget.
Key numbers
What it needs
- A place for the dock
- Height 18.5 in (470 mm)with room in front for the robot to drive in
- Water
- Tanks in the dock, or a mains water connection
- Under furniture
- A gap of at least 3.34 in (84.8 mm)
- Navigation
- Maps the home with a LiDAR turret that retracts
Suited to
Thresholds up to 1.69 in (43 mm) pass with room to spare. From there to its 1.77 in (45 mm) climb it is at its limit, and higher thresholds rule it out. It goes under furniture with a gap of 3.34 in (84.8 mm) or more: its height plus 0.2 in (5 mm). The vacuum finder applies both rules, and the methodology states them.
Its dock takes care of the bin and the mop, the most you can ask of a dock in the finder.
Full specifications
- Threshold climb
- 1.77 in (45 mm)
- Robot height
- 3.14 in (79.8 mm)with the LiDAR turret lowered
- Robot width
- 13.9 in (353 mm)
- Navigation
- Maps the home with a LiDAR turret that retracts
- Cleaning
- Vacuums and mops with a vibrating mop pad
- Mop lift on carpet
- 0.31 in (7.9 mm)
- Leaves the mop at the dock
- Yes, before carpet
- Mop reaches out to edges
- Yes
- Water tank in the robot
- 70 ml
- Dock
- Dock empties the bin, washes and dries the mop
- Mop wash water
- Up to 100 °C (212 °F)
- Dock refills the water tank
- Yes
- Dock doses detergent
- Yes
- Mains water connection
- Offered
- Dock size
- Height 18.5 in (470 mm)
- Carries on after a recharge
- Yes
- Run time per charge
- 190 min
- Battery
- 6,400 mAh
- Suction as stated
- 36,000 Pamakers measure suction in different ways, so it never ranks a model
- Dustbin in the robot
- 228 ml
- Detects carpet
- Yes
- Side brush reaches out to corners
- Yes
- Obstacle sensing
- Structured light sensor and camera
- Noise
- 64 dBmakers measure noise in different ways
- Voice and smart home
- A built in assistant, Matter, Alexa, Google Assistant and Siri Shortcuts
- Warranty
- 1 year
- Sold in
- US and EU
Price by region
| Market | Price | Maker's page |
|---|---|---|
| United States | $1,699.99 list price as of October 2026 | Roborock US page for the Saros 20 Sonic (opens in a new tab) |
| United Kingdom | Not sold there | None |
| European Union | €1,549 list price as of October 2026 | Roborock EU page for the Saros 20 Sonic (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
Next lower US price from Roborock
Climbs 1.77 in, 3.14 in tall. Dock empties the bin, washes and dries the mop. $1,599.99 as of October 2026.
Closest US price from another brand, same kind of dock
Climbs 1.77 in, 3.13 in tall. Dock empties the bin, washes and dries the mop. $1,699.99 as of October 2026.
Closest US price from another brand, same kind of dock
Climbs 1.65 in, 3.50 in tall. Dock empties the bin, washes and dries the mop. $1,599.99 as of October 2026.
Sources
Every number on this page comes from these pages, read on the date shown. Botsize reads specifications and does not test vacuums.
- Roborock product page for the Saros 20 Sonic, on us.roborock.com, read on
- Roborock product page for the Saros 20 Sonic, on de.roborock.com, read on
- Roborock product page for the Saros 20 Sonic, on global.roborock.com, read on
- Roborock manual for the Saros 20 Sonic, on gl-files.roborock.com, read on
- Roborock specification sheet for the Saros 20 Sonic, on us.roborock.com, read on