# Segway Navimow X390 review

Top X3 model with RTK and vision for lawns up to 2.5 acres

- Our score: not scored yet
- Price: $4,499 (checked Nov 11, 2026)
- Status: on sale
- Best for: large open properties up to 2.5 acres
- Skip if: your yard is under an acre or very hilly
- HTML version: https://robotsforthat.com/robot/segway-navimow-x390/

## Verdict

The X390 is the X350 with a bigger battery and a 2.5 acre rating, so it suits large, mostly open properties. Pro Tool Reviews found it handled four linked zones, wet grass and toys well. It is still two wheel drive and costs a lot, so hilly or mid size yards are better served by an AWD model.

## Pros

- Covers up to 2.5 acres
- Up to 240 min runtime per charge
- Fast multi zone setup in the app
- Good obstacle avoidance with 300° vision
- IP66, pauses for rain

## Cons

- Very expensive
- Two wheel drive, no AWD
- Thick or long grass needs a few passes
- May need an RTK antenna outside Network RTK coverage

## Specs

- area: Up to 2.5 acres; map can reach 1.2x that (Navimow)
- max slope: 50% (27°), 25% (14°) at the boundary (Navimow)
- navigation: EFLS 3.0: RTK plus VSLAM and visual inertial odometry, 300° RGB and ToF obstacle detection (Navimow)
- boundary wire: Not needed
- cut width: 9.3 in, single 6 blade disc (Navimow)
- cut height: 2 to 4 in (Navimow US)
- battery runtime: 12.8Ah, up to 240 min per charge, about 100 min recharge (Navimow)
- drive: Rear wheel drive with traction control, same X3 platform as the X350; no AWD
- rtk required: Network RTK where covered; RTK antenna for other areas (Navimow, Notebookcheck)
- multi zone: Multiple zones linked by channels; Pro Tool Reviews mapped 4 zones and 3 channels in under 30 min
- noise: 60 dB(A) (Navimow)
- weather: IP66; pauses in rain and resumes (Pro Tool Reviews)

## Safety

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

## Questions buyers ask

### How is the X390 different from the X350?

Same X3 body and navigation, but a 12.8Ah battery for up to 240 min per charge and a 2.5 acre rating, per Navimow.

### Does it need a boundary wire?

No. It uses RTK plus cameras. You may need the RTK antenna if your address lacks Network RTK coverage.

### Is it good on hills?

Navimow rates it for 50% slopes, but it is two wheel drive. For steep, bumpy yards an AWD model like the X450 is safer.

## Sources

1. [Navimow X390 product page (US)](https://navimow.com/collections/robot-lawn-mower/products/segway-navimow-x390)
2. [Pro Tool Reviews, Segway Navimow X3 review](https://www.protoolreviews.com/?p=182885)
3. [Notebookcheck, verdict on the Navimow X3](https://www.notebookcheck.net/Verdict-on-the-Navimow-X3-Almost-perfect-but-one-question-remains-unanswered.1051974.0.html)
4. [Navimow X3 series spec and compare (US)](https://navimow.com/pages/navimow-x3-specs)