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- Romo S vs S8 Pro Ultra
DJI Romo S vs Roborock S8 Pro Ultra
What Romo S does better (5) and where S8 Pro Ultra wins (5) — every spec side by side.
vs
8.8Cleaning power3.4
8.3Navigation6.7
7.6Mopping5.4
7.7Base station9.3
6.5Battery6.5
Dimensions
Size comparison
Romo SS8 Pro Ultra
| Romo S | S8 Pro Ultra | Difference | |
|---|---|---|---|
| Height | 98 mm | 96 mm | +2 mm |
| Width / diameter | 351 mm | 350 mm | +1 mm |
| Length | 351 mm | 350 mm | +1 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Romo S better than S8 Pro Ultra?
- Suction power25,000 Pa vs 4,000 Pa6.2×
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Mop typeRotating mop pads vs Vibrating / sonic mop
- Charging time150 min vs 360 min2.4×
- Noise level56 dB vs 67 dB+20%
Why is S8 Pro Ultra better than Romo S?
- Cleaning area per charge178 m² vs 300 m²+69%
- Battery capacity5,000 mAh vs 5,200 mAh+4%
- Height98 mm vs 96 mm+2%
- Dustbin (robot)260 ml vs 350 ml+35%
- Water tank (robot)164 ml vs 200 ml+22%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 25,000 Pa | 4,000 Pa |
| Dustbin (robot) | 260 ml | 350 ml |
| Main brush | Dual main brushes | Dual main brushes |
| Anti-tangle brush | Yes | — |
| Side brushes | 2 | 1 |
| Extending side brush | Yes | — |
| Carpet detection | Yes | Yes |
| Noise level | 56 dB | 67 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Cliff sensors, Ultrasonic sensor | LiDAR laser (LDS) |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| Threshold climbing | — | 22 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Vibrating / sonic mop |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | — | 5 mm |
| Extending mop (edges) | Yes | — |
| Water tank (robot) | 164 ml | 200 ml |
| 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) | 2.4 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) | 4 l | — |
| Dirty water tank (dock) | 3.2 l | — |
| Battery & runtime | ||
| Battery capacity | 5,000 mAh | 5,200 mAh |
| Runtime | 180 min | 180 min |
| Charging time | 150 min | 360 min |
| Cleaning area per charge | 178 m² | 300 m² |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 351 mm | 350 mm |
| Length | 351 mm | 350 mm |
| Height | 98 mm | 96 mm |
| Weight | 4.4 kg | — |
| Shape | Round | Round |
| Colours | White | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | — | Amazon Alexa, Google Assistant, Apple Siri |
| Live camera view / video call | Yes | — |
| Remote control | — | Yes |
