POWER ZOOM-IR was designed for professionals and hunters who expect breakthrough zooming technology. This revolutionary breed of tactical illumination products, installed with a high-output Infra-Red LED in combination of an automatic zooming system, together with our most innovative cable switch with dimmer in one sealed unit, allowing hunters to select their most comfortable intensity level and focusing when targeting and shooting. This Power ZOOM-IR is unleashd, TACTICAL illumination will never be the same. This fabulous lighting tool operates by one piece of rechargeable 18650 (3,100mAh) li-ion battery with a built-in recharging system. This flashlight must be used with a Nightvision device.