Best for
- Medium lawns
- Wire-free navigation
- Lower budget
Roborock RockMow S108
RockMow S108 is a RockMow S1 variant built for around 800 m2, with Sentisphere navigation and AI-powered mapping.
Specs verified on
Not sold in the United States
Area0.20 acres (8,611 sq ft)
Slope45 %
Indicative price1 799 €
10-second verdict: Roborock RockMow S108
Watch-outs
- Rear-wheel drive
- 4G/anti-theft optional
Data & Reliability
- 6 public technical sources
- 2 official manuals available
- consolidated external review synthesis
- 32 useful specs shown
- Confidence score: fair, a few specs still need confirming
Quick analysis
A useful wire-free variant if your lawn fits the stated 800 m2, with a 22 cm cutting width.
SpecsLib Calculated Metrics
These indicators are computed by SpecsLib from official manufacturer specs. They do not appear as such in any brand's documentation.
Area / Price5 sq ft/€
Square feet covered per euro spent. The higher the ratio, the better the area-to-price value.
Mowing density3,974 sq ft/hr
SpecsLib estimate (max area ÷ runtime), not published by the manufacturer: actual mowing time includes mapping, obstacle avoidance and recharging, so this figure likely overstates real-world throughput.
Slope score45/100 (Good)
Normalised score based on the declared maximum slope (45%). 100 = mechanical limit, 0 = flat ground.
Price history
Technical specs
Underlined terms open a plain-language explanation of navigation, detection and ecosystem technologies.
| Recommended area | 0.20 acres (8,611 sq ft) |
|---|---|
| Launch year | 2026 |
| Maximum slope | 45 % |
| Cutting height | 20-60 mm |
| Cutting width | 8.7 inches |
| Cutting system | 3 cutting blades + floating cutting deckCutting systemBlade or deck type used to cut the grass. + optional 3 cm edge cuttingEdge cuttingHow close to a wall or an edge the mower cuts, measured in centimetres of grass left. |
| Drive system | Rear-wheel drive |
| Battery | 4.6 Ah / 99.36 Wh / 21.6 V |
| Replaceable battery | No |
| Charge time | 75 min |
| Runtime per charge | 130 min |
| Dimensions | 24.6 x 16.5 x 10.6 inches |
| Navigation | RTKRTKHigh-precision satellite correction, usually with a base station or antenna. + VSLAMVSLAMCamera-based navigation that estimates position by rebuilding the scene. + Vision |
| Perimeter-wire free | Yes |
| Obstacle avoidance | SentisphereSentisphereRoborock's name for its multi-sensor garden navigation. + Stereo Vision |
| Connectivity | App + Wi-Fi + Bluetooth + Optional 4G |
| Boundary setup | AI-powered mappingMappingBuilding the map of the garden the mower uses to plan its passes. + RTKRTKHigh-precision satellite correction, usually with a base station or antenna./VSLAMVSLAMCamera-based navigation that estimates position by rebuilding the scene. |
| Mowing modes | Zone + Multi-zone + Pattern + Custom pattern + Wildlife-friendly schedule + Edge |
| Remote camera view | No |
| Patrol mode | No |
| Human detection | Yes |
| Two-way audio | No |
| Anti-theft / tracking | Lift alert + Geofence alerts + PIN lock + Optional 4G tracking + Third-party tracker compatible |
| Blade change | No |
| Rain sensor | Yes |
| Water protection | IPX6IPX ratingWater-resistance rating, not a blanket immersion guarantee. |
| Weight | 29.5 lbs |
| Multi-zone management | Yes, count not published |
| Edge distance | 1.2 inches |
| Obstacle crossing | 1.6 inches |
| Minimum passage | 27.6 inches |
| Warranty | 3 years |
This model's technologies, against the evidence
What the brand promises, what independent tests actually found, and the limit to plan around.
Roborock PreciEdge
Brand Promise
An edge module brings the cut to around 3 cm from the boundary.
What testers found
Senses measured roughly 3 cm with the module against roughly 10 cm without it: the function does what it says. Two reservations. The module was sold separately, 1,799 SEK at the time of the test, and once fitted it drops obstacle clearance from 8 cm to 5 cm and reduces agility.
Watchout / Limitation
Depending on the version the module ships with the mower or is bought separately: the 3 cm figure assumes it is there. The same test found software still under construction, mowing patterns pushed back, and passages between zones needing close to a metre.
What the tests say
The Roborock RockMow S1 offers a reliable wireless solution for mid-sized lawns. Reviewers focus on its clean cut and Sentisphere camera mapping. Constraints include the 2WD layout which can slip on wet slopes, and limited battery runtime compared to the premium Z1 series.
Strengths reviewers highlight
What public reviews and owner feedback most often praise.
- Smart, smooth Sentisphere visual navigation
- Clean, even cut quality
- Excellent handling of temporary no-go zones
- Good price/features balance for flat lawns
Limits found in reviews
Consolidated watchouts identified by SpecsLib to help evaluate fit for your lawn and budget.
- 2WD rear-wheel drive prone to slipping on wet grass or slopes
- Average battery runtime means several recharges
- Standard 2-year manufacturer warranty
- Not for uneven lawns or ground full of holes
Internal editorial synthesis, rewritten and consolidated without outbound links to analysed publications.
Frequently Asked Questions
What is the maximum area for the RockMow S108?
It is designed to mow up to 0.20 acres (8,611 sq ft).
What is the maximum slope handled by the RockMow S108?
This model can handle slopes up to 45%.
Does the RockMow S108 require a boundary wire?
No, this model operates without a wire (virtual navigation).
What is the area-to-price ratio of the Roborock RockMow S108?
According to the SpecsLib calculation, the Roborock RockMow S108 delivers 5 sq ft/€. Square feet covered per euro spent. The higher the ratio, the better the area-to-price value.
What is the mowing density of the Roborock RockMow S108?
SpecsLib computes a mowing density of 3,974 sq ft/hr for this model. SpecsLib estimate (max area ÷ runtime), not published by the manufacturer: actual mowing time includes mapping, obstacle avoidance and recharging, so this figure likely overstates real-world throughput.
What is the slope score of the Roborock RockMow S108?
SpecsLib assigns a slope score of 45/100 (Good) to the Roborock RockMow S108. Normalised score based on the declared maximum slope (45%). 100 = mechanical limit, 0 = flat ground.
What to buy instead
This model is not sold in your market. These mowers from the same brand are.
Roborock RockNeo Q110
RockNeo Q110 is a RockNeo Q1 variant built for around 1,000 m2, with Sentisphere navigation and AI-powered mapping.
Roborock RockMow Z115
RockMow Z115 is a RockMow Z1 variant built for around 1,500 m2, with Sentisphere navigation and AI-powered mapping.
Roborock RockMow X120H LiDAR AWD
The US version of Roborock's rugged platform: 3D LiDAR with no RTK and no satellites, AWD, 80% slope, about 0.49 acre.
Technical sources
Latest verification of official and technical sources.
- Roborock Europe - RockMow S1 2026-07-02
- Roborock Europe - RockMow S1 specs 2026-07-02
- Roborock Europe - RRTR0BUT/RRTR1BUT supplementary manual 2026-07-02
- Roborock Europe - BRR-62C-4600HD battery declaration 2026-07-02
- Roborock Europe - Lawn Mower Limited Warranty Policy 2026-07-02
- Roborock Support - mower battery replacement safety 2026-07-02
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