Brand Ultrafire Model 504b Emitter brand Mc-e Light color Warm white Total emitters 1 Battery configurations 1 x 18650/2 x 16340 rechargeable battery (not included) Voltage input 3.0-18v, 18v max. Switch type Clicky/clickie Switch location Tail-cap Modes 1 Circuitry Digital regulated 1800ma current output Runtime 1 hour (manufacturer rated) Lens Coated glass lens Reflector Aluminum textured/op reflector 1 x led flashlight