# Segway Navimow X450 review

AWD wire free mower for steep yards up to 1.5 acres

- Our score: not scored yet
- Price: $2,999 (checked Nov 11, 2026)
- Status: on sale
- Best for: hilly or rough yards up to 1.5 acres
- Skip if: your lawn is small and flat
- HTML version: https://robotsforthat.com/robot/segway-navimow-x450/

## Verdict

The X450 is the 1.5 acre top of the X4 line, with four wheel drive, a 17 in deck and a 40° slope rating. Reviewers of the X430 sibling found grip and navigation excellent on hard, sloped lawns. It is big, loud for a robot and pricey, so flat small yards do not need it.

## Pros

- Four wheel drive, rated for 40° slopes
- Wide 17 in deck
- Up to 120 zones
- Network RTK, often no antenna to install
- 2 years of 4G included

## Cons

- Expensive
- Large and heavy
- Louder than most, up to 68 dB(A)
- Busy app with many settings

## Specs

- area: Up to 1.5 acres (Navimow); Expert Reviews lists 5,000 m² for the UK X450
- max slope: 84% (40°) (Navimow); PCWorld's sloped yard posed no trouble for the X430 sibling
- navigation: Tri frequency Network RTK with 360° VSLAM and VIO plus 360° AI vision (Navimow)
- boundary wire: Not needed
- cut width: 17 in (Navimow)
- cut height: 0.75 to 4 in (Navimow)
- battery runtime: Up to 9,600 sq ft per charge, 90 min or less recharge at 224W (Navimow); Expert Reviews saw about 150 min runs on the X430
- drive: Four wheel drive, dual suspension, front wheel steering, climbs 2.8 in obstacles (Navimow)
- rtk required: Network RTK where covered; GNSS antenna included for other areas (Navimow)
- multi zone: Up to 120 zones, plus no go areas (Navimow)
- noise: Below 68 dB(A) (Navimow)
- weather: IP66 (Navimow)

## Safety

- recalls: Not checked
- fcc: Not checked
- company status: Active
- warranty: Up to 3 years (Navimow)

## Questions buyers ask

### Is there a subscription?

Connect+ 4G is free for 2 years on the X450, then $32.90 per year, per Navimow.

### How steep a hill can it mow?

Navimow rates it for 84% (40°) slopes thanks to four wheel drive and dual suspension.

### X450 or X430?

Same AWD body. The X450 is rated for a bigger area, so pick it if your lawn is over about two thirds of an acre.

## Sources

1. [Navimow X450 with garage, product page (US)](https://navimow.com/products/x450-mower-with-garage)
2. [PCWorld, Segway Navimow X430 review](https://www.pcworld.com/article/3192029/segway-navimow-x430-review.html)
3. [Expert Reviews, Segway Navimow X4 Series (X430) review](https://www.expertreviews.co.uk/home-garden/lawn-mowers/segway-navimow-x4-series-x430-review)