Compare Xiaomi Mi Robot Vacuum-Mop 2 Pro+ (Mijia 1T, STYTJ02HZM) vs. VIOMI S9
| Xiaomi Mi Robot Vacuum-Mop 2 Pro+ (Mijia 1T, STYTJ02HZM) | VIOMI S9 | |
| Photo |  |  |
| Where to buy |
|
|
| SRR Score | 174 | 185 |
| Mapping / Path planning | Yes | Yes |
| Mapping Sensor Type | camera | LDS |
| High-Precision Map | Yes | Yes |
| Objects recognition (front camera) | Yes | No |
| Recharge & Resume | Yes | Yes |
| Autocally Docks and Recharges | Yes | Yes |
| Noise Level | N/A | 70 dB |
| Display | No | No |
| Side Brushes (one or two) | 1 | 1 |
| Voice Prompts | Yes | Yes |
| Cleaning Features | ||
| Suction Power | 3000 Pa | 2700 Pa |
| Сleaning Area | 240 ㎡ / 2583 ft2 | 320 ㎡ / 3444 ft2 |
| Dustbin Capacity | 550 ml / 18.6 oz | 300 ml / 10.14 oz |
| Disposable dustbag capacity | N/A | 3 L |
| Automatic Dirt Disposal | No | Yes |
| Barrier-cross Height | 20 mm / 0.79 in | 20 mm / 0.79 in |
| HEPA filter | Yes | Yes |
| Washable Filter | Yes | Yes |
| Mopping Features | ||
| Wet Mopping | Yes | Yes |
| Electric water flow control | Yes | Yes |
| Water Tank Capacity | 250 ml / 8.45 oz | 250 ml / 8.45 oz |
| Vibrating mopping pad | No | No |
| Automatic mop lifting | No | No |
| Auto water tank refilling | No | No |
| Auto mop washing | No | No |
| Battery | ||
| Battery Capacity | 5200 mAh | 5200 mAh |
| Battery life | 180 min | 150 min |
| Charging Time | N/A | N/A |
| Rated Power (Watts) | N/A | 50 W |
| Control | ||
| Scheduling | Yes | Yes |
| IR/RF Remote Control | No | No |
| Wi-Fi / Smartphone App | Yes | Yes |
| Wi-Fi Frequency Band | 2.4 GHz | 2.4 GHz |
| Amazon Alexa Support | N/A | N/A |
| Google Assistant Support | N/A | N/A |
| Magnetic/Optical Virtual Walls | No | No |
| App Features | ||
| Real-time tracking | Yes | Yes |
| Digital Blocked Areas | Yes | Yes |
| Zoned cleaning | Yes | Yes |
| Multi-floor maps | N/A | Yes |
| Manual movement control | Yes | Yes |
| Selected Room Cleaning | Yes | Yes |
| No-mop zones | No | No |
| Sensors | ||
| Carpet Boost | N/A | Yes |
| Anti-drop / Cliff Sensor | Yes | Yes |
| Dirt Sensor | No | No |
| Full Dustbin Sensor | No | No |
| Other Specifications | ||
| Weight | 3.7 kg / 8.16 lbs | 3.8 kg / 8.38 lbs |
| Width | 35 cm / 13.78 in | 35 cm / 13.78 in |
| Height | 8.2 cm / 3.23 in | 9.8 cm / 3.86 in |
| In the box | Vacuum Cleaner, Charging Base, Cleaning Tool, Water Tank, Side Bruss, Mop Cloth, Manual | |
| Release Date | Nov, 2020 | Nov, 2020 |
| Warranty | 12 months | 12 months |
Features Comparison Chart
Popular detailed comparisons
Roborock Comparison: Qrevo, Saros, and Q series
6 years, 5 months
46 139K
Eufy Comparison Chart 2025
6 years, 6 months
81 152K
Roomba 2025 Lineup: All iRobot Robot Vacuums Compared
7 years, 3 months
43 1.62M
Dreame Robot Vacuums Lineup: L series vs X vs. D9 Max
3 years, 12 months
6 61.1K
Popular reviews
Roborock Comparison: Qrevo, Saros, and Q series
6 years, 5 months
46 139K
Eufy Comparison Chart 2025
6 years, 6 months
81 152K
Roomba 2025 Lineup: All iRobot Robot Vacuums Compared
7 years, 3 months
43 1.62M
Dreame Robot Vacuums Lineup: L series vs X vs. D9 Max
3 years, 12 months
6 61.1K