$2,999
MSRP; listed as sold out on navimow.com US on 2026-10-30; was $2,699 on sale over Labor Day 2026
What it does well
- Flagship 1.5-acre X4 with 4WD and 84% (40°) slope rating
- 17 in twin-disc floating deck; about 0.15 acre per hour
- 2 years of Connect+ cellular service included
What to watch for
- Same chassis as the X430: heavy (about 64 lb) and needs edge trimming (X430 reviews)
Sources, checked for this page:
- navimow.com/products/navimow-x4-robot-lawn-mower
- navimow.com/apps/api/newOfficialWebsite/product/compare?functionId=PC17685398275
- engadget.com/home/smart-home/segways-navimow-brand-unveiled-a-new-line-of-roboti
- 9to5toys.com/2026/08/27/segway-navimow-labor-day-sale-x430-robotic-lawn-mower-22
- expertreviews.co.uk/home-garden/lawn-mowers/segway-navimow-x4-series-x430-review
- On sale
- 2026-02
- Price
- $2,999 (MSRP; listed as sold out on navimow.com US on 2026-10-30; was $2,699 on sale over Labor Day 2026)
- Rated lawn size
- 65,300 sq ft (1.5 acre)
- Steepest slope
- 84%
- Navigation
- RTK + Vision
- Boundary wire
- Not needed
- Drive
- All-wheel drive
- Cutting width
- 17 in
- Cutting height
- 0.8 to 4 in
- Noise
- 68 dB(A)
- Battery
- 12.8 Ah (published); 90 min charge
- Mowing per charge
- 110 min
- Obstacle avoidance
- VisionFence: 360° RGB camera + ToF, 200+ obstacle types
- Edges
- EdgeSense ride-on mode; X4 sibling got within ~5–10 cm of beds in Expert Reviews' test
- Several zones
- Yes
- Anti-theft
- GPS tracking, out-of-boundary alarm, lift alarm, PIN, Find My, proximity unlock
- Connectivity
- Wi-Fi, Bluetooth, 4G
- Rain sensor
- Yes
Closest rivals on size and price
| Segway NavimowX430New | $2,499 | 1 ac | 84% | 68 dB |
|---|---|---|---|---|
| LymowOne Plus 10ANew | $2,599 | 1.7 ac | 100% | n/a |
| Segway NavimowX350 | $2,799 | 1.5 ac | 50% | 60 dB |
| Segway NavimowX450New | $2,999 | 1.5 ac | 84% | 68 dB |
| MammotionLUBA 3 AWD 5000New | $3,299 | 1.2 ac | 80% | 70 dB |
| HusqvarnaAutomower 420 iQ | $3,300 | 1 ac | 45% | 62 dB |