UniqueFire T38 IR 850nm LED Night Vision Torch 3 Modes T20 Zoomable Flashlight with Memory Function QUICK CHANGE LED PILL SYSTEM: The UF-T20 has unique feature a quick change LED pill system that enables the colour of LED to be changed easily from red, green, white or infrared . (extra LED pill purchased separately) LONG RANGE ILLUMINATION: Utilize high power IR black 850nm LED emitter- the smallest infrared LEDs with more than one watt of optical power. Rotary focusing system: illuminate much farther with smaller light spot. CAUTIONS: Infrared light is invisible to human eyes. It is designed to be used with night vision device.(Only a small and faint red glow on the LED to show you that the torch is on). ASPHERICAL LENS: 38MM Lens rotary focusing torch suitable for hunters. Illuminate much farther with smaller light spot. It has the ability to focus in for a tight spotlight or back out for a great effect. MODE MEMORY: 3 Modes System from Low-Mid-High with Mode Memory. (This Flashlight Remembers and Turns on to the Last Setting that it is Operated On). It is powered by 1 x 18650 rechargeable battery (not include in the package).