Feature: High-frequency pulses High-frequency pulses of up to 1600-1800 times/min accurately clean the gaps and dead corners of the teeth, easily remove bacteria and food residues, and make your mouth comfortable and clean. 360 Rotatable nozzle The nozzle can be rotated 360 to clean the mouth in all directions without dead ends, effectively remove tartar and stains, and restore your beautiful white teeth. Six-speed cleaning mode + Four kinds of replaceable nozzles Meet the teeth cleaning needs of different groups of people, and effectively improve the oral condition. Effectively cleans the mouth Effectively cleans the mouth, freshens breath, improves symptoms such as yellow teeth, black teeth, swollen and sore gums and bleeding gums, and prevents tooth decay and gum disease. Specifications: Material: ABS PC Color: white/black Size: 45*58*162mm Weight: 0.505kg Packing size: 1.5*5.5*19.5cm Battery model: 18650 lithium ion battery Battery capacity: 2200mAh Product voltage: 5V Product power: 5W Use time: 2 minutes automatic power off Battery life: 50 days Water tank capacity: 180ml Charging time: 4-6 hours Waterproof grade: IPX7 (life waterproof) Product noise: 65DB Audience: over 10 years old Packing List: 1* host 1* jam 1* Blister 4* nozzles 1* USB Charging Cable 1* English User Manual