Material quality: TPEProduct size: 17.68x12x12cmNet weight: 0.161KGCharging voltage: DC5V/1ARated voltage/current: DC3.7V/500mABattery capacity: 650MA / lithium batteryControl intensity: 3 gearsFeatures:1. TPE 3D massage arm: There are 12 3D massage arms made of TPE material, with good elasticity and high flexibility 2. USB port charging: USB charging port, no need to install batteries, with 4 red LED lights 3. 1 key switch, 3 gear selection: 1 switch, simple operation, control switch and gear position, 3 gear selection can experience different experiences 4. Multiple usage methods: fit the curve of the head.Massage method: vibration massage charging voltage: DC5V/1A rated voltage/current: DC3.7V/500mA control intensity: 3 levels product size: 17.68x12x12cm. It will automatically shut down after 15 minutes of power on. The full charge indicator does not flash. Charging time: about 2.5 hours, working time: about 4 hours. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin