Waterproof LED Bicycle Rear Light USB Charge Cycling Taillight

Light source: 1* LED Bead Color: Red/Black Light Output: 10 lumens Mode: 3 modes Battery: Li-polymer 220mAH embedded Charge: 5V 1A max. About 2 hours to full charge Run time: 6-20 hours, subject to mode in use Ingress protection: Water splash proof, do not use in water Material: Aluminum, Gel, electronic devices etc. Mount: Fits Tube Dia. 12-34mm Weight: About 30g