LED Concepts Bicycle Bike Light 5 LED Headlight and Taillight Set with Multiple Different Flashing Modes and a Quick Release Feature 5 LED Headlight (over 40 ft range) with tool-less handlebar mount and 5 LED Taillight with adjustable quick-release mount and 360 visibility Super bright lights with OptiCube lens technology for a wider, 150 candlepower beam with excellent visibility Weatherproof rubber gasket mounting attachments keep lights on your bike even on the toughest roads Lights are made of high quality ABS plastic- easily installed and includes quick release feature to quickly and easily remove lights Lasts up to 80 hours  headlight requires 4XAAA and taillight requires 2XAAA (Batteries NOT INCLUDED)