Buy it for
Steep lawns between one and one and a half acres.
Skip it if
Your lawn is under an acre. The X430 is $500 cheaper.
Specs
| Max area | 1.5 acres (US listing) |
|---|---|
| Max slope | 84% (40°) |
| Navigation | Tri-frequency network RTK + 360° VSLAM + visual inertial odometry |
| Setup | No local antenna needed with network RTK; a GNSS antenna is included for optional installation. |
| Cutting width | 16.9 in (430 mm) |
| Cutting height | 0.8–3.7 in (20–95 mm) |
| Price seen | $2,999 on Navimow's US store |
What's good
- 1.5 acres with an 84% slope rating
- Same wide deck and navigation as the X430
- Navimow lists 1,300 m² per charge
What to know
- Relies on RTK and cameras rather than LiDAR
- $2,999
Will it fit your lawn?
Put your lawn size and slope into the fit calculator to see the Segway Navimow X450 next to every other mower we cover. The closest in size: Dreame A3 AWD Pro, Segway Navimow X430, WORX Landroid Vision Cloud 4WD (1 acre).
Sources
Specs and price checked 2 November 2026. We haven't tested this mower hands-on; this verdict compares published specifications.