- Area
- Up to 2.5 acres
- Max slope
- 50%
- Navigation
- EFLS 3.0: RTK
- Cut width
- 9.3 in
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Segway Navimow X390
Top X3 model with RTK and vision for lawns up to 2.5 acres
Researched by Riley Hart · updated Nov 11, 2026
Is the Segway Navimow X390 worth it? The X390 is the X350 with a bigger battery and a 2.5 acre rating, so it suits large, mostly open properties. It costs $4,499 as of Nov 11, 2026, and 2 independent reviewers tested it.
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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
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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.
Best for: large open properties up to 2.5 acres. Skip if: your yard is under an acre or very hilly.
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
3 year cost of ownership
- Robot
- $4,499
- Total
- $4,499
Navimow lists the battery on the accessories list and a 3 year warranty. 4G service terms for the X390 were not confirmed on a page we fetched, so they are not costed.
Status and safety
- US availability
- ● On sale
- Recalls
- ● No Segway Navimow robot recall in the CPSC database as of Nov 11, 2026. Checked daily.
- FCC authorized
- Not checked
- Company
- ● Active
- Warranty
- ● 3 years (Navimow)
Price history
Tracked dailyTracking started Nov 11, 2026 at $4,499.
Each day adds a point. Turn on a price alert to hear about drops.
Where to buy
- Amazon
- See price →
- Navimow store
- $4,499 →
Affiliate links. We may earn a commission. It never changes our score. Disclosure
What independent reviewers found
- Tested the X390 on a multi acre property with 4 zones and 3 channels. Mapping took under 30 min, it handled narrow paths, wet grass and minor slopes without slipping and dodged toys and beds. Early passes left uneven spots that improved later, and a hilly, thick grass run covered 43% (6,131 sq ft) before a recharge.
- Pro Tool Reviews
- Testing the X3 series (X315 unit), it called the line one of the best robot mowers of 2025: reliable mowing, systematic paths and near flawless camera obstacle detection. Downsides were high standby power use, the need for an RTK antenna and a high price, with the X390 listed at $4,999 RRP.
- Notebookcheck
Spec history
Checked dailySpec tracking starts with the next daily check.
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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.
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