parameter: Name: 6 gears sonic electric toothbrush Power: 1.5w Rated voltage: DC 5V Waterproof grade: IPX-7 Mode: 6 files Working features: 2 minutes smart reminder, 30 seconds partition reminder Main unit size without toothbrush head: 2.5x2.5x22cm Product weight: body 54g, brush head 4.2g/pc, charging cable 12g Package size/weight: 20x17x3cm, 110g Standard list: host x1, toothbrush head x4, charging cable x1, manual x1, color box x1 Function description: 1. USB charging model, working time, 1-2 times a day, 2 minutes each time, can be used for 45-60 days, 2. Working mode: gear memory function, 2-minute timer, 30-second pause, short press to start, short press to switch gears after booting, first gear, second gear, third gear, fourth gear, fifth gear, sixth gear, long Press for 3 seconds to shut down. 3. The light is on at the corresponding gear position when working, the red light is on when charging, and the light turns green when it is fully charged. Warm reminder: The bristles of the brush head are deformed during the production and transportation process, which is normal, and can be restored to normal after soaking in warm water.