Using an optimal combination of pressure and pulsation, the removes plaque and food particles from brackets and wires, and it massages and stimulates the gums. These actions help reduce plaque on the teeth and around hardware, while also improving gum health. Warm Tips: 1.Please Read All Instructions Carefully Before Use 2.If You Want To Use With Water, Mouthwash Or Anti-bacterial Rinses,Follow The Suggestions Of Your Dentists Or Hygienist 3.Don't Face To Your Eyes When You Turn On The Oral Irrigator Item Features 1.Product Name: 100% New Brand Oral Irrigator For Adults 2.Model: D301 3.Housing Material: 100% High Quality ABS 4.Water Tank Material: 100% High Quality PC 5.Features: Multifunctional / IPX7 Waterproof / 3 Adjustable Work Modes / Strong Water Pressure / Convenient Portable USB Charging / Detachable Large Capacity 200ml Water Tank / 5 x Different Function Nozzles,1 x Cleaning Brush / 360 Rotating Nozzles / Unique Gravity Ball Design / Waterproof Plug & Dustproof Plug Design 6.Certification: CE / FC / FDA 7.Power Adapter Input Voltage: Compatible With Global Voltage(100-240V) 8.Input: DC 5V / 1A 9.Output: 3.7V / 5W 10.Frequency: 50 / 60HZ 11.Water Tank Type: Detachable Large Capacity 300ml Water Tank 12.Pulse Frequency: 1400 Times / Min 13.Water Pressure Range: 40-90 PSI 14.Battery Type: Rechargeable 1400mAh Lithium Battery 15.Charging Mode: Convenient Portable USB Charging 16.Charging Time: 8 Hours 17.Working Time Of Fully Charged: 15 Days (Work Twice Each day) Or Continuous Work 60 Minutes 18.Package Size: Approx 28cm x 7cm x 9cm 19.Package Weight: Approx 0.48kg Package Included: 1 x Oral Irrigator(Not Include Nozzles) 1 x USB Charging Cable(Not Include Power Adapter) 1 x Instruction Manual 1 x Package Box