The Segway Navimow i108E is one of the most interesting value propositions in robotic mowing right now: RTK GPS accuracy — a feature that cost $2,000+ just two years ago — in a $1,299 package. Is it actually good? Yes. Is it right for everyone? No. Here's the full breakdown. ## Specs at a Glance - **Price:** $1,299 - **Coverage:** Up to 0.5 acres (21,780 sq ft) - **Navigation:** RTK GPS (base station required) - **Slope:** 30% - **Cutting width:** 9.9 inches - **Runtime:** 180 minutes - **Charge time:** 90 minutes - **Noise level:** 57 dB - **App:** Segway Navimow (iOS & Android) - **Connectivity:** Wi-Fi + Bluetooth - **Weather resistance:** IPX6 ## Setup Experience Setup takes about 45 minutes total. You'll mount the base station somewhere with a clear view of the sky (a fence post, eave, or deck works fine), connect it to your Wi-Fi, then walk your boundary using the app. The GPS-guided boundary walk is satisfying — you can see your path on the map in real-time. One note: the base station needs a good sky view. If you're surrounded by tall trees or buildings that block the horizon, RTK accuracy will degrade. For most suburban yards, this isn't an issue. After boundary setup, you configure your mowing schedule and you're done. The i108E starts its first mow automatically on schedule. **Verdict on setup:** Easier than wire-based systems, slightly more involved than camera-based systems (Worx, ECOVACS). The payoff in precision is worth it. ## Mowing Performance The i108E mows in parallel stripes — not the random patterns of older mowers. The stripe pattern looks great, and the RTK GPS keeps lines consistent. After a few sessions, you'll notice real lawn health improvements from the consistent micro-trimming. Cut quality is good. The disc blade system (3 small blades per disc) handles most grass types well. On thick St. Augustine or Zoysia in summer heat, you may want to run it more frequently. The 9.9-inch cutting width means it takes more passes to cover your lawn than wider mowers, but the 180-minute runtime is more than enough for 0.5 acres in one session. Our test yard (0.35 acres) was done in about 90 minutes. **Verdict on mowing:** Excellent stripe quality, consistent coverage, good cut quality. The narrower deck means more passes, but runtime compensates. ## Slope Handling The 30% slope rating is accurate and reliable on dry grass. On wet grass, we'd be cautious above 25%. If your yard has significant slopes (over 25%), look at the Mammotion LUBA 2 AWD instead. For gently rolling yards or flat properties, the i108E's slope handling is a non-issue. ## The Navimow App Segway's app is genuinely excellent — one of the best in the category. Key features: - **Real-time positioning map:** See exactly where your mower is, with path history - **No-go zones:** Draw exclusion zones for flower beds, play equipment, etc. - **Custom schedules:** Set different schedules for weekdays/weekends - **Mowing statistics:** Session length, area covered, battery usage - **Remote control:** Manual drive mode for moving the mower The app connects reliably via Wi-Fi and maintains connection even when you're away from home (cloud-based remote access). **Verdict on app:** Best-in-class. The real-time map alone is worth the praise. ## Noise 57 dB is whisper quiet compared to any gas mower. At the property line, you can barely hear it running. You can comfortably run it early morning or late evening without disturbing neighbors. ## What We Like - RTK GPS precision at a genuinely mid-range price - Excellent app with real-time mapping - 0.5-acre coverage handles most suburban yards - 180-minute runtime in one session - Very quiet operation - Clean stripe pattern (looks great) ## What Could Be Better - 30% slope limit — not suitable for hilly properties - 9.9-inch cutting width is narrower than competitors - Base station requires open sky (limits placement options in wooded yards) - No 4G cellular option (Wi-Fi only) - No auto-blade replacement (ECOVACS G1 has this) ## Who Should Buy the i108E **Buy it if:** - Your yard is 0.25–0.5 acres - Your terrain is relatively flat (under 25% slope) - You have good Wi-Fi coverage in your yard - You want RTK GPS precision without paying $1,600+ - You care about having a great app experience **Look elsewhere if:** - Your yard exceeds 0.5 acres (consider ECOVACS A3000 or LUBA 2) - You have significant slopes over 30% (LUBA 2 AWD) - You have heavy tree cover blocking the sky (ECOVACS A3000) - You hate maintenance (ECOVACS G1 with auto-blade replacement) ## Our Rating: 4.4/5 The i108E punches above its price class. RTK GPS at $1,299 was impossible two years ago. The app is class-leading. Setup is clean. The 30% slope limit and narrower deck are real trade-offs, but for the typical flat-to-gently-rolling suburban yard, this is the best value in the entire mid-range category. [Buy the Segway Navimow i108E on Amazon](https://www.amazon.com/s?k=Segway+Navimow+i108E&tag=scotthunt20-20) **Our take:** If your yard fits the profile (flat, 0.25–0.5 acres, good Wi-Fi), the i108E is the easy recommendation at $1,299. If you're on the fence between this and the ECOVACS A3000, spend the extra $300 for the A3000's Lidar and larger coverage area — it's worth it for most buyers.