Specification:Item Type: Electric Shower BrushMaterial: ABSGear: 4 GearsWaterproof Grade: IPX7 Battery Type: Lithium Battery Battery Capacity: 1500mAh (Included) Power Supply Type: USB Data CableHow To Use:Brush Head Installation And Disassembly Method: When removing the brush head, press the button at the center of the brush head vigorously. At this time, the brush head will bounce up slightly and pull up to remove the brush head. When installing the brush head, align the rut on the back of the brush head with the central hole on the head, press the brush head downward, and hear the sound of the brush head in place, indicating that the installation is in place. Then release the brush head.Product Description: Switch Button: Press the power button to turn on or off the machine.Mode Button: Under the working state, press M to switch 4 gears according to your needs. At this time, the function indicator will light up corresponding gears in turn. Mode 1: High speed (high swing low strength) the bush swing in 15° plus or minus, generally used for washing face. A. The shower head can bring a large number of tiny broken bubbles, and the cleanser can foaming quickly and deeply. B. Brush and skin resonance, moderate press to promote eye, temple and other blood circulation, deep fatigue relief. Mode 2: Medium high speed (medium swing and medium strength) synchronous and high speed brush swing, generally used for bathing. A. Deep : the skin horniness, pore dirt, sweat residue and other rapid removal; B. Acid discharge and fatigue relief: hot water flushing is helpful to promote blood circulation and has significant effect on acid discharge after exercise; C. Physical decontamination: no chemical decontamination agent can also achieve excellent decontamination effect, no secondary damage; D. Human design: long handle arc design to solve the back pain points. Mode 3: Medium speed (low