Model: UltraFire C1 - Features a Cree XR-E Q5-WC LED emitter - Powered by 2 x 3.0V/3.6V CR123A or 1 * 18650 battery - Accepted voltage input range: 3.7V~12V - Single-mode tailcap clicky switch - 230 lumens maximum brightness (manufacturer rated) - Circuit current output: 800mA (manufacturer rated) - Continuous runtime: 3 hours (manufacturer rated) - Regulated driver circuitry - Glass lens with aluminum textured/OP reflector - Comes with a mounting clip Dimensions: 5.2 in x 1.24 in x 1.01 in<img src="http://112.74.112.28/down/products/110032/110032_000.jpg" noproxy>