Feature - Color: As shown. - Material: Aluminum Alloy. - Size: 10x4x2.5cm. - Working voltage: 3.7V. - Bead color temperature: 7500K. - Charging voltage: 5V/1A. - Can be used as an emergency flashlight, keep it inside your car, basement, attic, and emergency kit. - Use it when youre running, jogging, hiking, camping, walking your dog, cycling, changing a tire, night time family/kids activities, power outage and MORE Enjoy enhanced visibility and comfort knowing you'll be safe and secure at any time of the day. - New type quick-release bike mount for easy and secure adjustment of the light direction. - Life waterproof, key switch and USB charging interface covered with expanded rubber cover, dustproof and waterproof, but does not support diving, wipe clean after rain, dry place is suitable for storage - When the blue light is on, into the induction mode,and with the change of brightness around the light will change. - Diversification of charging methods: The computer's USB port can be used for charging, and it can also be charged by home charger or charging treasure, but the voltage of the charger can't exceed 5V (the charging equipment does not contain). Excessive voltage will damage the lamp.