Model: UltraFire A3 - Features a Cree XR-E Q5-WC bin LED emitter - Powered by 1 x 1.2V/1.5V AAA or 1 x 10440 battery - Voltage input range: 1V ~ 4.2V - Single-mode tail cap clicky switch - Regulated driver circuitry - 600mA circuitry current output - 80~100-lumen maximum brightness (manufacturer rated) - 1 ~ 1.5 hours total runtime (manufacturer rated) - Glass lens with plastic smoth reflector Dimensions: 3.43 in x 0.61 in x 0.61 in<img src="http://112.74.112.28/down/products/110080/110080_000.jpg" noproxy>