product information: Size: 10.8 * 5.2 * 4.4cm Color: black blue red Material: ABS plastic Real 800 lumens Built-in 4000mAh battery Double T6 lamp beads Touch waterproof power switch IPX6 waterproof Built-in 120dB Bell Bell cable: 40 cm USB rechargeable Intelligent induction: When you stop cycling for more than 3 minutes. The bicycle light will turn off automatically (in smart mode) When the bicycle light feels vibration. It will open automatically Intelligent sensing model: When the outside light is enough. It will automatically dim When the external light is dimmed. It will automatically light up Right side: flat floodlight Left side: raised spotlight (Please note: the lights on both sides only light up in the warning mode) package: 1 *Smart bicycle light