Segway Navimow i105N vs Anthbot M9: Robot Mowers Compared
Updated · Price Drop Radar
Bottom line
Both are wire-free RTK mowers for small yards, and both need an antenna or reference station with a clear view of the sky. The Anthbot M9 is rated for about twice the lawn (1,000 m2 vs 500 m2), climbs 45% slopes to the Navimow's 30%, cuts a slightly wider 7.9 in path and runs longer per charge. The Segway Navimow i105N costs less, and Reviewed praised how well it steers around footballs, tools, chairs and pets. Pick the M9 for a yard near a quarter acre or with a slope. Pick the Navimow for a small, cluttered yard of about 1/8 acre or less.
Segway Navimow i105N
Anthbot M9
Side by side
| Spec | Segway Navimow i105N | Anthbot M9 |
|---|---|---|
| Rated lawn size [1][4][5] | 500 m2 (1/8 acre); Segway's table lists 600 m2 as the maximum | Up to 1,000 m2 (about 1/4 acre) |
| Navigation [1][2][3] | RTK plus AI vision, with a staked antenna | Full-band RTK plus two cameras, with an RTK station on a pole |
| Max slope [1][4][5] | 30% (Reviewed lists 29%) | 45% (24 degrees) |
| Cutting width [1][4][5] | 18 cm (7.1 in), 3 blades on a disc | 20 cm (7.9 in), 5-blade disc |
| Cutting height [3][4][5] | 20 to 60 mm (0.8 to 2.4 in), set by hand on a dial | 3 to 7 cm (1.2 to 2.8 in), set in the app |
| Runtime per charge [2][3][4] | About 60 minutes; 90 minutes to recharge | 70 to 90 minutes, depending on the grass |
| Noise [3][4][5] | 58 dB(A) | 58 dB or less |
| Water rating [3][4][5] | IP66 | IPX6 |
| Weight [4][6] | 10.9 kg (24 lb) | About 10 kg (22 lb) |
| 4G [3][5] | Optional module, about $150 | Built in, with network RTK at no extra cost, per Anthbot |
| Warranty [2][4] | 2 years on Segway's i105 page; confirm on the Amazon listing | 3 years on the mower and station, 2 years on the battery |
| List price [1][5] | $999.99; $799 on Amazon when Reviewed checked | $899; $769 sale on Anthbot's site |
Segway Navimow i105N
- Reviewed named it the best value robot mower it tested
- Reviewed saw it avoid footballs, lawn tools, chairs and pets
- Quiet, with a dust and water rating of IP66
- Rated for only about 1/8 acre, with a narrow 7.1 in cut
- Android Police found it leaves small unmowed strips and struggles in corners
- Cutting height is a manual dial, and runtime is about 60 minutes
Anthbot M9
- Reviewed mapped about 90% of a patchy yard automatically
- Steeper 45% slope rating and a wider cut
- 4G with network RTK is included, per Anthbot
- Reviewed found it leaves clippings behind, and one charge may not finish a full mow
- Gadget Review found a strip of standing grass along walls and beds
- Two drive wheels on plastic tires drift on uneven ground, and razor blades stall in tall grass
Which one is right for you
| If you are | Pick | Why |
|---|---|---|
| Yard of about 1/8 acre or less, lots of toys, tools and pets | Segway Navimow i105N | Reviewed praised its obstacle avoidance, and it costs less |
| Yard near a quarter acre | Anthbot M9 | Rated for 1,000 m2 vs 500 m2 |
| Lawn with a slope | Anthbot M9 | 45% rating vs 30% |
| Want to set cutting height from your phone | Anthbot M9 | The Navimow's height is a manual dial |
| Tighter budget | Segway Navimow i105N | $999.99 list vs $899 list, but check live prices on both |
What to look for
Sky view for the RTK antenna
Why it matters: Both mowers get their position from satellites, so a blocked sky can stop them or throw off the map.
How to check: Pick a spot for the antenna or station that sees open sky, away from roof lines and tree canopy, before you buy.
Watch out: Gadget Review notes the spot that works is usually farther out in the yard than you want, and one tester had to move the station because a house and a tree blocked the signal.
Lawn size and real runtime
Why it matters: A mower that can't finish a mow on one charge returns to the dock and resumes, which stretches the job.
How to check: Compare your lawn to the rated area, then to the runtime: about 60 minutes for the Navimow, 70 to 90 for the M9.
Watch out: Reviewed's M9 finished about 80% of its lawn in 77 minutes before it went to recharge.
Edges and corners
Why it matters: Both mowers leave some grass along walls, beds and corners that you finish by hand.
How to check: Walk the edge of your lawn and note walls, fences and planted beds the mower can't drive over.
Watch out: Gadget Review measured the M9's cutting disc about 9 cm in from the housing edge. Android Police found the Navimow needs touch-ups in corners.
Grass height and mowing frequency
Why it matters: Both use small razor blades and a camera, so they work best on lawns kept short.
How to check: Plan to run either one every few days, not once a week.
Watch out: Gadget Review says the M9's vision can read tall grass as a solid object, and Anthbot tells owners to bring the lawn under 7 cm before mapping.
Slopes
Why it matters: Steep ground is where a mower's drive and tires decide whether it finishes the job.
How to check: Find your steepest section. A 10-foot rise over 20 feet is 50%.
Watch out: The Navimow is rated 30% and the M9 45%, both manufacturer figures. Segway lists only 10% at the lawn boundary.
Traps and timing
- The Amazon listing for the M9 is a bundle that includes a garage. Gadget Review says the garage adds about $70 in a bundle, so check what is in the box before comparing prices.
- The Navimow's size has been reported two ways. Segway's launch coverage said 1/4 acre, while Segway's spec table and Reviewed list about 1/8 acre (500 m2). Plan for 1/8.
- Segway's website calls the series the i105, and Amazon lists the i105N. Confirm the N on the listing, since the specs on this page come from the i105N reviews and Segway's i105 table.
- The M9's 1,000 m2 rating is Anthbot's claim. Reviewed's yard was patchy and the mower needed a recharge partway through, so a lawn near the limit means a longer job.
- Prices for both change often. Gadget Review reports the M9 selling closer to $649 for most of the year, well under its $899 list.
Before you check out
- Measure your lawn and compare it to 500 m2 (Navimow) and 1,000 m2 (M9).
- Find a spot with open sky for the antenna or RTK station.
- Note your steepest slope and compare it to 30% and 45%.
- List the walls, beds and corners you will still trim by hand.
- Confirm the model on the listing: i105N or M9.
- Check the live Amazon price and what is in the box.
How we put this together
We don't test robot lawn mowers in a lab. We compared the makers' published specs, the Amazon listings and independent reviews, all listed under Sources, and where they disagree we say so. Prices come from Amazon and are refreshed by our system throughout the day.
Price Drop Radar earns a commission on qualifying Amazon purchases made through links on this page, at no extra cost to you. That never decides which product we recommend.
Quick answers
Do the Navimow i105N and Anthbot M9 need a boundary wire?
No. Both are wire-free. They use RTK satellite positioning plus cameras, and you map the yard in an app.
Which one handles slopes better?
The Anthbot M9 is rated for 45% slopes. The Navimow i105N is rated for 30%. Both are manufacturer figures.
Which one is bigger?
By rated area, the M9, at 1,000 m2 vs 500 m2 for the Navimow. The M9 also cuts a 7.9 in path against the Navimow's 7.1 in.
Which one is quieter?
They are close. Both list about 58 dB. Reviewed calls the M9 whisper-quiet and lists quiet as one of the Navimow's pros.
Can I set cutting height in the app?
On the M9, yes, from 3 to 7 cm. On the Navimow i105N the height is set by hand on a dial, from 20 to 60 mm.
Sources
- The Best Robot Lawn Mowers (Tested by Experts) of 2026, Reviewed
- Anthbot M9 Robot Lawn Mower Review, Reviewed
- Segway Navimow i105N review, Android Police (via Yahoo Tech)
- Navimow i Series spec and compare, Segway
- ANTHBOT M9 product page, Anthbot
- ANTHBOT M9 Review: Quiet, Cheap, and Picky About Your Lawn, Gadget Review