LE LED Bike Light Set, Cycling Headlight and Taillight, Batteries Included, 3 Light Modes, 200lm, Water Resistant, Front and Rear Bicycle Light Set, Bike Lights, Easy Install/Quick Release Safty Guider: Guide the way with the headlight and need not worry about being knocked over by others with the taillight. Easy installation. The bike light set can be easily install and released, and no tools are required. Zoomable effect: you can manually "zoom" the light by extending the flashlight head outward. The more you extend, the more narrow, focused, and brighter the beam will be. Can be used as a flashlight. The lights can be detached from the mounting bracket quickly to be used as an emergency flashlight. Packing list. The set comes with 1 * bicycle headlight (white light), 1 * tail light (red light), 1 * bike light mount holder and 3*AAA+2*CR2032 batteries.