Fast mounting rubber straps allow lights to be easily mounted to all shapes and sizes of handlebars, headtubes, seat posts, hubs, helmets and more. Features: Improved optics and LED technology provides visibility up to 1 mile Hooded beam keeps light out of the cyclist's eyes Translucent case allows for 220 degrees of visibility Up to 100 hours run time on one replaceable CR2032 battery (included) Specs: Recharge Type Not Rechargable Battery CR2032