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- RVM 4 Comfort Extra vs M3 Max
Kärcher RVM 4 Comfort Extra vs Lefant M3 Max
What RVM 4 Comfort Extra does better (2) and where M3 Max wins (4) — every spec side by side.
vs
7.6Cleaning power9.0
8.6Navigation4.3
7.9Mopping6.3
6.8Base station9.4
6.6Battery8.4
Dimensions
Size comparison
RVM 4 Comfort ExtraM3 Max
| RVM 4 Comfort Extra | M3 Max | Difference | |
|---|---|---|---|
| Height | 100 mm | 97 mm | +3 mm |
| Width / diameter | 350 mm | 320 mm | +30 mm |
| Length | 350 mm | 320 mm | +30 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is RVM 4 Comfort Extra better than M3 Max?
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Charging time230 min vs 240 min+4%
Why is M3 Max better than RVM 4 Comfort Extra?
- Suction power15,000 Pa vs 20,000 Pa+33%
- Runtime160 min vs 210 min+31%
- Height100 mm vs 97 mm+3%
- Dust bag (dock)2.3 l vs 3.2 l+39%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 15,000 Pa | 20,000 Pa |
| Main brush | Single main brush | Single main brush |
| Anti-tangle brush | — | Yes |
| Side brushes | 1 | 1 |
| Carpet detection | Yes | Yes |
| HEPA filter | — | Yes |
| Noise level | 66 dB | — |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor | LiDAR laser (LDS), Cliff sensors |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| No-go zones / virtual walls | — | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Rotating mop pads |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | — | 9 mm |
| Extending mop (edges) | Yes | — |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | All-in-one dock (empty + wash) |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 2.3 l | 3.2 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | — | Yes |
| Hot-air mop drying | Yes | — |
| Automatic water refill | Yes | Yes |
| Clean water tank (dock) | 2.5 l | — |
| Dirty water tank (dock) | 3 l | — |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | — |
| Runtime | 160 min | 210 min |
| Charging time | 230 min | 240 min |
| Cleaning area per charge | — | 210 m² |
| Size & weight | ||
| Width / diameter | 350 mm | 320 mm |
| Length | 350 mm | 320 mm |
| Height | 100 mm | 97 mm |
| Weight | 3.8 kg | — |
| Shape | Round | Round |
| Colours | White | Grey |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | — | Amazon Alexa, Google Assistant |
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