What it is
The Navimow i105 is the 0.125-acre SKU in Segway’s US i series. It is a perimeter-wire-free robot mower with EFLS 2.0 (Network RTK plus Visual SLAM), a 140° VisionFence camera, a 7.1-inch deck, and a published 30% (17°) climb inside the work area. It is not the 0.25-acre US i110, not the EU/AU i108, and not an X3 or X4.
Official US numbers published for this SKU: recommended mowing area 0.125 acre (product title “Navimow i105 Robotic Lawn Mower｜0.125 acre”), FAQ maximum about 0.15 acre depending on layout (1.2× the recommended area), slopes up to 30% (17°) inside the work area and 10% (6°) at the boundary, 7.1-inch cutting width, 2–3.6 inch manual cutting height, 58 dB(A), IP66, 24 lb, and 21.4 × 15.1 × 11.2 in.
Who it’s for
People with up to one-eighth acre of lawn who want to skip a boundary wire and do not need an X-series deck or all-wheel drive. Antenna-free setup is available where Network RTK coverage exists; the i-series pages still describe a local GNSS antenna and an antenna-location finder as the fallback install. It is a weaker match for 0.25-acre lots (that is the i110), for anything in X3/X4 acreage, for work-area slopes over 30%, and for properties whose passages are under the published 100 cm width / 40 cm height minimum.
Standout details
- Coverage: 0.125 acre recommended on the official US product title and FAQ. Segway’s mapping footnote is 1.2× the recommended area (0.15 acre here); the FAQ repeats that as the layout-dependent maximum. All zones share one map limit.
- Navigation: EFLS 2.0 with centimeter-level RTK plus Visual SLAM for weak-satellite spots. Obstacle detection is 140° RGB VisionFence (150+ object types), not spinning LiDAR and not X3/X4’s 300° RGB+ToF. Network RTK is described as no extra cost where coverage exists.
- Setup: Wire-free. AI-assist mapping, multi-zone management, standard or ride-on virtual boundaries. A local antenna remains part of the install story when Network RTK is not available.
- Drive and slope: Dedicated i105 page and i-series page publish front-wheel drive with large wheels and a 30% (17°) work-area climb. Boundary slope is 10% (6°). (The i-series spec compare table says “Rear-wheel drive” for both acreage columns; that contradicts the dedicated pages — this listing follows the dedicated product page.)
- Cutting: 7.1-inch width, three blades, manual height 2–3.6 in. Max mowing speed 1.6 ft/s. i105 column on the spec table: 2.55 Ah battery, about 90 minutes to charge, about 60 minutes of mowing, 60–100 m² (0.015–0.025 acre) per hour. Do not use the 5.1 Ah / 120 min / 80–120 m² column — that is the 0.25-acre sibling.
- Other verified specs: IP66; 58 dB(A); 24 lb; 21.4 × 15.1 × 11.2 in; Bluetooth and Wi-Fi; Alexa and Google Home; weather-adaptive scheduling; 3-year warranty and 30-day returns on the PDP. 4G connectivity and anti-theft/GPS tracking require a separate Navimow Access+ 4G module. Passage FAQ for Navimow-i: height not less than 40 cm; width not less than 100 cm.
Sources: Navimow i105 product / cart page, i-series page, and i-series spec compare, checked 3 Sep 2026.
Honest verdict
Pay the $799 US cart (9 Oct 2026, no sale or compare-at) if the lawn is actually 0.125 acre or less and a 7.1-inch, 30% i-series mower is enough. Skip it if you need 0.25 acre (i110, $1,099 but sold out on 9 Oct 2026), X-series coverage or AWD, or a path narrower than the published 100 cm passage.
