Waterproof Teeth Oral Irrigator Portable Mouth Washing Machine Interdental Cleaning Irrigator USB Oral Teeth Dental Water FlosserParameter: Material: ABS (Housing ) + PC(Water Tank) Output: three / 5W Water Tank: 200ml Pulse Frequency: 1200 Times / Min Water Pressure Range: 30-110 PSI Battery: Rechargeable 1200mAh Lithium Battery Charging Mode: USB Charging Working Time Of Fully Charged: 4 Hours