AUFO 120 Lumens LED USB Rechargeable Mountain Road Bicycle Rear Tail Light Three Working Modes: High (2 hours+)- Mid(2.5 hours+) strobe(3 hours+). Practicability: it made by aluminum and ABS plastic blended shell. Waterproof: Water resistant rated to IPX4 - Protected against splashing water from any angle. USB Rechargeable Bike Light: it could be charged from computer or any device with a USB port, only take 2 hours to fully charge. Install Easily - Fits ALL Bicycles, Trikes, and Scooters. Anywhere can install this light-Helmet, Backpack, Baby carriage.