IFA 2026 in Berlin opened on September 3 with two competing robot mower brands making the same bet on the same weekend: the edge is still where wire-free mowers struggle most. Mammotion previewed the LUBA 4 AWD and a professional-grade Maston line, both described in its own press materials as a preview of its 2027 product generation, with pricing and channel details promised before the end of 2026. Segway Navimow previewed the H5 Pro and an extendable arm called EdgeMaestro. Neither is shipping yet and neither has a price, but the two approaches to the same problem are different enough to be worth understanding now.
Mammotion’s answer: an optional arm, price not yet shared
The LUBA 4 AWD comes in three configurations, 3000F, 6000F and 12000F, covering roughly 3,000, 6,000 and 12,000 square meters. All three add a four-camera surround-view system to Mammotion’s existing 360-degree LiDAR and NetRTK, an upgrade from the dual-camera setup on the LUBA 3 AWD. Android Authority reports all-wheel drive with per-wheel torque vectoring and an 80 percent slope rating; Gizmodo, briefed by Mammotion ahead of the show rather than a hands-on test, separately confirms the cutting widths: 440 mm on the two smaller models and 530 mm on the 12000F. None of those figures appear in Mammotion’s own press release.
The edge-cutting piece is not included by default. Gizmodo describes it as an attachable arm that extends from the back of the mower, and reports that Mammotion has not shared how much it will cost. Gizmodo’s own writer also doubts the mower clears a separate hurdle specific to US buyers: current US rules restrict authorization of new foreign-made robot mowers, and Mammotion has not announced a US release date. SpecsLib covered that rule change in July.
Mammotion’s separate Maston line targets professional grounds crews: two cutter options, a fleet management dashboard, and a fast-charging station. It is open for pre-order through European and Australian distributors only, with no price disclosed yet.
Segway Navimow’s answer: the same blade, not a bolt-on
The H5 Pro’s “extendable arm” framing suggests a second cutting tool, but Navimow’s own announcement says the opposite: “the cutting disc used for edge mowing is the same one used for the main lawn area, not a separate add-on attachment.” The EdgeMaestro arm extends the existing deck by 7.7 cm rather than carrying its own blade. It floats to follow bumps in uneven ground and is built to rebound off obstacles like ground lights. Navimow describes two separate safety systems: PanoGuard, which stops the arm itself near a detected person or animal, and a broader 360-degree VisionFence system (triple cameras, LiDAR and a thermal infrared sensor) that detects small animals and other obstacles at night and reroutes the mower generally. Navimow says edge mowing runs as quiet as 58 dB(A), and the mower can cross obstacles up to 6 cm. The chassis uses Segway’s Xero-Turn all-wheel drive with independently controlled wheel-hub motors and the same 80 percent slope rating as the LUBA 4 AWD. Navimow has not published a maximum coverage area for the H5 Pro, so there is no direct size comparison to the LUBA 4 AWD’s three tiers yet.
What already ships, and what to compare against
Mammotion’s own smaller LUBA mini 2 AWD 1000 already ships with a dedicated edge disc, a real improvement per four independent tests without fully closing the gap on tall edges. Gizmodo also notes that Dreame’s unreleased A4 AWD Pro ships with its edging arm attached rather than optional. Neither the LUBA 4 AWD nor the H5 Pro has independent testing yet, so current models are the honest comparison if you need a mower now. The Mammotion LUBA 3 AWD 3000 already ships in the US and runs the sensor stack the LUBA 4 AWD builds on; TechRadar and testsieger.de describe its edge-approach mode (up to four passes without touching a wall or fence), while NETZWELT, testing its own unit, measured a residual strip of about 6 cm along tall edges, exactly the gap these new announcements are trying to close. Dreame’s own current A3 AWD Pro 3500 claims an under-3-cm edge result, but that figure is Dreame’s own, reproduced without an independent measurement by heise and PC-WELT. On the Navimow side, the current LiDAR flagship sold in Europe is the i210 LiDAR Pro. Navimow does list an i2 LiDAR model on its US storefront, but SpecsLib currently tracks it as newly announced rather than independently reviewed, so US buyers weighing Navimow’s LiDAR approach today have less third-party testing to go on than the European lineup.