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- RVM 4 Comfort Extra vs R90 Pro
Kärcher RVM 4 Comfort Extra vs Welltec R90 Pro
What RVM 4 Comfort Extra does better (4) and where R90 Pro wins (2) — every spec side by side.
vs
6.8Base station5.1
6.6Battery4.3
Why is RVM 4 Comfort Extra better than R90 Pro?
- Base stationAll-in-one dock (empty + wash) vs Charging dock
- Runtime160 min vs 150 min+7%
- Charging time230 min vs 390 min+70%
- Noise level66 dB vs 76 dB+15%
Why is R90 Pro better than RVM 4 Comfort Extra?
- Dust bag (dock)2.3 l vs 4.5 l+96%
- Clean water tank (dock)2.5 l vs 4.5 l+80%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 15,000 Pa | — |
| Dustbin (robot) | — | 700 ml |
| Main brush | Single main brush | — |
| Side brushes | 1 | — |
| Carpet detection | Yes | — |
| Noise level | 66 dB | 76 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | — |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor | — |
| Obstacle avoidance | AI camera | — |
| Room mapping & room selection | Yes | — |
| Mopping | ||
| Mop type | Rotating mop pads | — |
| Mop lifting on carpets | Yes | — |
| Extending mop (edges) | Yes | — |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | Charging dock |
| Auto-empty dust station | Yes | — |
| Dust bag (dock) | 2.3 l | 4.5 l |
| Mop washing in the dock | Yes | — |
| Hot-air mop drying | Yes | — |
| Automatic water refill | Yes | — |
| Clean water tank (dock) | 2.5 l | 4.5 l |
| Dirty water tank (dock) | 3 l | — |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | — |
| Runtime | 160 min | 150 min |
| Charging time | 230 min | 390 min |
| Size & weight | ||
| Width / diameter | 350 mm | — |
| Length | 350 mm | — |
| Height | 100 mm | — |
| Weight | 3.8 kg | — |
| Shape | Round | Round |
| Colours | White | Black |
| App & smart home | ||
| App control | Yes | — |
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