Is the Segway Navimow X390 or the Yarbo Y40 Lawn Mower Pro better?

Wire-free. RTK GNSS from the included Data Center base station, or network RTK where coverage exists, with binocular cameras, ultrasonic sensors and a bumper for obstacles; rubber tracks rather than wheels. A modular yard robot: the Y40 core also takes snow-blower, blower and trimmer modules.

Cutting

23.7 cm (9.3 in) cut, 50 to 100 mm (2.0 to 3.9 in) height, about 60 dB

50 cm (19.7 in) cut, 20 to 100 mm (0.8 to 3.9 in) height, about 60 dB

Battery runtime

240 min

120 min

Rain

Weather-adaptive: pauses and returns to the dock in rain, snow, or frost (IP66)

Rain detection (IPX5 on the core's spec)

Anti-theft

GPS tracking, PIN code, lift/burglar alarm, and a geofence out-of-boundary alert

4G GPS tracking, geofence alerts and movement notifications (4G free for a year, then a paid plan)

Connectivity

4G, WiFi, Bluetooth (5-year free 4G service)

4G, Wi-Fi, Wi-Fi HaLow and Bluetooth

Best for

Estate lawns Steep & terraced

Released

2025

Brand

Segway

Yarbo

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 buySegway Navimow X390

For most lawns, the Segway Navimow X390 is the better buy at $4,499: it covers up to 10,118 m² (2.5 acres), about $1,000 less than the Yarbo Y40 Lawn Mower Pro. Step up to the Yarbo Y40 Lawn Mower Pro only if your lawn is larger than 10,118 m² (2.5 acres) or steeper than 50%.

From $4,499

The bottom line

What actually differs

Segway Navimow X390 has the lower price ($4,499).
Yarbo Y40 Lawn Mower Pro covers the most lawn (24,281 m² (6 acres)).
Yarbo Y40 Lawn Mower Pro handles the steepest slopes (up to 70%).

Go deeper

Open the full record

Segway Navimow X390 Yarbo Y40 Lawn Mower Pro

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.