USB Fast Charging Teeth Cleaning Machine Portable Dental Water Flosser Water Dental Drill Oral Irrigator Mouth Washing MachineParameter: Material: ABS (Housing ) + PC(Water Tank) Output: 3 / 5W Water Tank: 220ml 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