Segway sold four mowers as one family — only the top one could see an obstacle before hitting it

Segway's H Series is presented as one machine in four sizes: the same body, the same 21 cm cutting width, the same 30 to 60 mm cutting height, the same 54 dB(A) sound power. The only thing the marketing separates is lawn area — 500, 800, 1,500 or 3,000 square metres — and the battery that goes with it. The manufacturer's own manual separates two more things, and neither of them appears in the sales copy. The first is the ultrasonic sensor. In the packing list of the H-series manual it carries a footnote of its own: "For H3000E". The specification table backs this up with two different sensor columns — three of the four machines get an IMU, a blade-halt sensor, a bump sensor, a lift sensor, a rain sensor and wheel encoders, and only the largest model adds ultrasound. For the buyer this is the difference between a mower that notices an object at a distance and a mower that finds out about it by driving into it and reversing. The second is the cellular modem. The status display chapter states that the 4G indicator applies "for H800E, H1500E and H3000E models", which leaves the entry-level H500E on Wi-Fi and Bluetooth alone — the one machine most likely to be bought for a small garden at the far end of a house's wireless coverage. Neither gap is hidden, exactly. Both are simply printed in a 69-page PDF rather than on the product page, and both survived the line's 2025 relaunch as the camera-equipped H500-VF through H3000-VF, priced from 1,399 to 2,699 euros. As of September 2026 every H variant shows as unavailable in Segway's European store, which now sells only the lidar-navigated i2 range and the X4 flagship. The pattern is worth carrying forward: in a family sold on lawn size, the cheaper number can also buy a shorter sensor list.