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)
- Segway Navimow Navimow X450 — residential: typical home lawns; 17-inch deck; battery (no fuel or engine maintenance)
What’s different? The 4 differences that matter most, from the published figures.
- Navimow X420 is rated for 0.49 acres (2,000 m²) of lawn; Navimow X450 is rated for 1.24 acres (5,000 m²) of lawn, a 0.74 acres difference. The rated lawn area is the maker's figure under its own test conditions. Obstacles, slopes and complex shapes reduce it.
- Navimow X420 ships with a 10 Ah battery; Navimow X450 ships with a 15 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 runs 90 min per charge; Navimow X450 runs 130 min per charge, a 40 min difference. Stated run time is under the maker's conditions. Thick or wet grass shortens it.
- Navimow X420 charges in 75 min; Navimow X450 charges in 100 min, a 25 min difference. Charge time is with the supplied charger; another charger changes it.
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 |
Navimow X450 Segway Navimow · Robotic |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | battery | battery |
| Electrical | ||
| Battery Capacity | 10 Ah | 15 Ah |
| Deck | ||
| Cutting Width | 16.9 in (430 mm) | 16.9 in (430 mm) |
| Min Cut Height | 0.8 in (20 mm) | 0.8 in (20 mm) |
| Max Cut Height | 3.7 in (95 mm) | 3.7 in (95 mm) |
| Blades | 12 | 12 |
| Drive | ||
| Drive Type | 4WD with dual independent steering motors | 4WD with dual independent steering motors |
| Dimensions | ||
| Weight | 63 lbs (28.8 kg) | 64 lbs (29.2 kg) |
| Robotic | ||
| Work Area | 2000 ft2 | 5000 ft2 |
| Max Slope | 84 pct | 84 pct |
| Navigation | EFLS™ NRTK (NRTK + 360° Vision + VIO) | EFLS™ NRTK (NRTK + 360° Vision + VIO) |
| Boundary | Wire-free | Wire-free |
| Run Time | 90 min | 130 min |
| Charge Time | 75 min | 100 min |
| Noise Level | 68 db | 68 db |
| Rain Sensor | Yes | Yes |
| Theft Protection | Yes | Yes |
| General | ||
| Warranty | 3 yr | 3 yr |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.