| Product Model：TH-491 | Charging current: 100mAh ( DC5V ) |
| Charging: Wireless | Frequency: 31000-33000 times/min |
| Lithium battery: DC3.7V 800mAh | Charging time: 10 hours |
| 5 modes: cleaning/whiten/polishing/protection/sensitivity | Noisy level : ≤65dB |
| Water proof: IPX7 | 2 minutes for ASO |
| Using time : 30 days ( twice a day ) | 30 seconds for reminding |
