Features: 1. ergonomic and elegant design 2. current update over voltage protection 3.360 rotary 4 nozzles for different oral hygiene needs 4. mode 6 for selection 5.With 240ml large capacity water tank visualized 6. IPX7 waterproof 7. global technical patent for elastic membrane pump 8. exclusive patent for anti-bacteria ABS material for all device 9. 2 minutes timer for power protection and intelligent memory 10. control Microcircuit 11.Low power consumption (fully charged battery for 4 hours can be used for 2 months 12.The charging port can be type c for type-c connection Function Brush your teeth after meals and before bed and it is easy to maintain good health for the oral cavity Feature Water tank: 250ml Voltage: 5v Battery: Lithium battery 2500 mAh Power: 5W Engine speed: 1400-1800 rpm Charging time: 2-3 hours Modes: 6 modes Waterproof: IPX7 Package list 1 x Oral Irrigator (To Not Include Nozzles) 4x Replaceable Nozzles 1 x USB Charging Cable (Not Includes Power Adapter) 1 x Instruction Manual 1 x Package Box