Compare Mowers
List prices are the manufacturer’s published figures, re-checked daily; they exclude tax, freight and dealer setup.
A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, read the values and decide what fits your needs.
Best suited for
What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.
- Segway Navimow Navimow X420 — residential: typical home lawns; 17-inch deck; battery (no fuel or engine maintenance)
- Sunseeker Sunseeker X5 Gen 2 — residential: typical home lawns; 9-inch deck; battery (no fuel or engine maintenance)
What’s different? The 5 differences that matter most, from the published figures.
- Navimow X420 has a 16.9 in (430 mm) deck; Sunseeker X5 Gen 2 has a 8.7 in (221 mm) deck, a 8.2 in difference. Deck width sets how much grass each pass covers. Mowing time also depends on ground speed, turns and obstacles, so a wider deck alone does not fix the job's length. Time both decks on your own lawn ›
- Navimow X420 weighs 63 lbs (28.8 kg); Sunseeker X5 Gen 2 weighs 29 lbs (13.1 kg), a 35 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Navimow X420's weight means for a trailer ›
- Navimow X420 ships with a 10 Ah battery; Sunseeker X5 Gen 2 ships with a 5 Ah battery, a 5 Ah difference. Amp-hours is stored energy at the pack's voltage. Run time also depends on load, so a bigger pack lasts longer under the same conditions, not a fixed time.
- Navimow X420 is rated for slopes to 84%; Sunseeker X5 Gen 2 is rated for slopes to 60%, a 24 points difference. The slope rating is the maker's limit for safe operation, not a measure of performance.
- Navimow X420 cuts from 0.8 in (20 mm) to 3.7 in (95 mm); Sunseeker X5 Gen 2 cuts from 1.6 in (41 mm) to 3.2 in (81 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
2 more differences, what isn’t comparable
Other verified differences
- Navimow X420 has 12 blades; Sunseeker X5 Gen 2 has 6 blades.
- Navimow X420 is rated at 68 dB; Sunseeker X5 Gen 2 is rated at 60 dB, a 8 dB difference.
Not comparable
- Run Time: not published for Sunseeker X5 Gen 2.
- Charge Time: not published for Sunseeker X5 Gen 2.
- Warranty: not published for Sunseeker X5 Gen 2.
Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.
Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.
| Spec | Navimow X420 Segway Navimow · Robotic |
Sunseeker X5 Gen 2 Sunseeker · Robotic |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | battery | battery |
| Electrical | ||
| Battery Capacity | 10 Ah | 5 Ah |
| Deck | ||
| Cutting Width | 16.9 in (430 mm) | 8.7 in (221 mm) |
| Min Cut Height | 0.8 in (20 mm) | 1.6 in (41 mm) |
| Max Cut Height | 3.7 in (95 mm) | 3.2 in (81 mm) |
| Blades | 12 | 6 |
| Drive | ||
| Drive Type | 4WD with dual independent steering motors | AWD & Steering rear wheel |
| Dimensions | ||
| Weight | 63 lbs (28.8 kg) | 29 lbs (13.1 kg) |
| Robotic | ||
| Work Area | 2000 ft2 | 2023 ft2 |
| Max Slope | 84 pct | 60 pct |
| Navigation | EFLS™ NRTK (NRTK + 360° Vision + VIO) | AONavi (RTK+VSLAM2.0) / Vision AI 2.0 (Binocular+iToF) |
| Boundary | Wire-free | — |
| Run Time | 90 min | — |
| Charge Time | 75 min | — |
| Noise Level | 68 db | 60 db |
| Rain Sensor | Yes | — |
| Theft Protection | Yes | No |
| General | ||
| Warranty | 3 yr | — |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.