MUMENG Only 20G Ultralight Mini Flashlight Glare Rechargeable LED Flashlight USB Rechargeable Flashlight Blue Product size: 22 * L54mm Product Weight: 20g Material: colorful ABS shell, the standard USB socket, waterproof design LED Specifications: 1 * LED (0.5W) Power Specifications: USB charging (built-in lithium battery, the capacity is 70mAh) Charging time: 20-30 minutes