Head to head
Segway Navimow X390 vs Sunseeker V3
Price, coverage, slope, navigation, and drive for Segway Navimow X390 and Sunseeker V3, side by side and cited.
- Store prices · checked 1 h agoVerified · checked 5 wk ago
2compared
10,118 m² (2.5 acres)largest lawn
Segway Navimow X390 (Navimow X390)·Sunseeker V3 (Sunseeker V3)
Your lawn
Set your lawn to see which of these fits it.
Drive
2-wheel drive
2-wheel drive
Obstacle avoidance
Navigation
Wire-free. RTK GNSS plus onboard AI vision, no perimeter wire.
Wire-free. Binocular AI cameras read the lawn edges and obstacles, with magnetic strips for open or unclear edges; no RTK, no LiDAR, and it mows in daylight only.
Cutting
23.7 cm (9.3 in) cut, 50 to 100 mm (2.0 to 3.9 in) height, about 60 dB
18 cm (7.1 in) cut, 20 to 60 mm (0.8 to 2.4 in) height, about 55 dB
Rain
Weather-adaptive: pauses and returns to the dock in rain, snow, or frost (IP66)
Automatic rain detection with a default 3-hour rain delay (IPX5)
Anti-theft
GPS tracking, PIN code, lift/burglar alarm, and a geofence out-of-boundary alert
PIN code and lift and tilt sensor
Connectivity
4G, WiFi, Bluetooth (5-year free 4G service)
Wi-Fi (2.4 GHz) and Bluetooth; Alexa and Google Home
Released
2025
2025
A check marks the lower price, the higher score, the larger coverage, and the steeper slope. Our pick below is derived from those same specs; the right choice still depends on your lawn, your budget, and how you'll use it.
Our pick
Which to buy
Best buySunseeker V3
For most lawns, the Sunseeker V3 is the better buy at $599.99: it covers up to 600 m² (0.15 acre), about $3,899 less than the Segway Navimow X390. Step up to the Segway Navimow X390 only if your lawn is larger than 600 m² (0.15 acre) or steeper than 42%.
From $599.99The bottom line
What actually differs
- Sunseeker V3 has the lower price ($599.99).
- Segway Navimow X390 covers the most lawn (10,118 m² (2.5 acres)).
- Segway Navimow X390 handles the steepest slopes (up to 50%).
Go deeper
Open the full record
BestRobotMower.co is an independent informational comparison site, not a manufacturer or a retailer. Specifications and prices are curated from public sources and can change or be incomplete. Always confirm the current spec, price, and availability with the manufacturer or seller before buying. Coverage and slope figures are rated maximums on an open lawn; real performance depends on your yard.