Features： 1、High Visibility: LED strobe warning flashing lights can improve visibility at night and in bad weather to ensure your driving safety. 2、USB Charging: Built in 90mah battery, flash lights works for up to 5 hours with a full load. When the light level is low, it means needs to be recharged. The indicator is red when charging and green when fully loaded. 3、LED Chipset: Aircraft LED flash lights uses a premium quality LED chipset for better light efficiency and brightness, high efficiency and stable performance. 4、Excellent Features: Small size and light weight, no extra burden on the drone, and takes up small space on the motorcycle or other models. 5、Simple Operation: Motorcycle LED flash lights are easy to install and you can install with hook and loop fasteners or rubber ring (included in the package), also without the need for complicated tools. Specification： Item Type: USB Charging LED Strobe Flashing Lights Material: LED Product Size: Approx: 3.9x2.72x1.3cm/1.53x1.07x0.51in Battery Specifications: Built in lithium battery 3.7V90mAh voltage 5V, current 3W (A); Battery Model: 551318 Package List： 1 x Package of Flashing Lights(2 x Colorful Mode LED Light, 4 x Rubber Ring, 4 x Hook and Loop Fasteners, 2 x USB Charging Cable )