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- Saros 20 Sonic vs Saros Z70
Roborock Saros 20 Sonic vs Roborock Saros Z70
What Saros 20 Sonic does better (5) and where Saros Z70 wins (3) — every spec side by side.
vs
9.0Cleaning power8.4
9.3Navigation9.7
7.5Mopping8.7
6.0Base station5.4
9.0Battery8.9
Dimensions
Size comparison
Saros 20 SonicSaros Z70
| Saros 20 Sonic | Saros Z70 | Difference | |
|---|---|---|---|
| Height | 80 mm | 80 mm | = |
| Width / diameter | 353 mm | 353 mm | = |
| Length | 353 mm | 353 mm | = |
Drawn to the same scale from the official dimensions (front and side).
Why is Saros 20 Sonic better than Saros Z70?
- Suction power36,000 Pa vs 22,000 Pa+64%
- Threshold climbing88 mm vs 40 mm2.2×
- Mop lift height35 mm vs 22 mm+59%
- Runtime190 min vs 180 min+6%
- Dust bag (dock)2.7 l vs 2.5 l+8%
Why is Saros Z70 better than Saros 20 Sonic?
- Obstacle avoidanceAI camera vs AI camera + 3D structured light
- Mop typeVibrating / sonic mop vs Rotating mop pads
- Dustbin (robot)228 ml vs 300 ml+32%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 36,000 Pa | 22,000 Pa |
| Dustbin (robot) | 228 ml | 300 ml |
| Main brush | Single main brush | Single main brush |
| Anti-tangle brush | Yes | Yes |
| Side brushes | 1 | 1 |
| Extending side brush | Yes | Yes |
| Carpet detection | Yes | Yes |
| Robotic arm | — | Yes |
| Noise level | 64 dB | 63 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Retractable LiDAR, Wall sensor, Cliff sensors | LiDAR laser (LDS), dToF laser, Wall sensor, Cliff sensors |
| Retractable LiDAR | Yes | — |
| Obstacle avoidance | AI camera | AI camera + 3D structured light |
| Threshold climbing | 88 mm | 40 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Vibrating / sonic mop | Rotating mop pads |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | 35 mm | 22 mm |
| Automatic mop removal | Yes | Yes |
| Extending mop (edges) | Yes | Yes |
| Water tank (robot) | 70 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) | 2.7 l | 2.5 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | Yes | Yes |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Clean water tank (dock) | 4 l | 4 l |
| Dirty water tank (dock) | 3.5 l | 3 l |
| Battery & runtime | ||
| Battery capacity | 6,400 mAh | 6,400 mAh |
| Runtime | 190 min | 180 min |
| Charging time | 150 min | 150 min |
| Recharge & resume | Yes | — |
| Size & weight | ||
| Width / diameter | 353 mm | 353 mm |
| Length | 353 mm | 353 mm |
| Height | 80 mm | 80 mm |
| Shape | Round | Round |
| Colours | Black | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant, Apple Siri |
| Matter | Yes | — |
| Live camera view / video call | Yes | Yes |
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