Feature 1、RETRACTABLE ZOOM: The flashlight has IR light with a wavelength of 850nm, which can make the item clearly visible in the dark night. It needs to be equipped with night vision goggles, camera, mobile phone, goggles and a camera that does not block infrared light as auxiliary fill light. 2、ALUMINUM ALLOY MATERIAL: The flashlight is an aluminum alloy shell, which has good wear resistance and rust resistance, and is not easy to damage the internal components. 3、NO VISIBLE LIGHT: The light emitted by our flashlight is invisible light with extremely high power, and no light can be seen by the eye. 4、BATTERY POWERED: Our flashlight is powered by 18650 Lithium battery or AAA battery(not included), long lasting battery life, energy saving and environmental protection. 5、FOR OUTDOOR USE: The flashlight can be waterproof, easy to clean, and can cope with a variety of harsh and complex outdoor environments. Item Type: IR Flashlight Material: Aluminum alloy Product Size: Shrinked State: Approx. 135 x 35 x 30mm / 5.3 x 1.4 x 1.2in Stretched State: Approx. 155 x 35 x 30mm / 6.1 x 1.4 x 1.2in Power Supply Battery: 1 x 18650 lithium battery or 3 x AAA batteries (excluded) Wavelength: 850nm Light Source: IR light Uses: Used for night vision goggles, cameras, mobile phones, monoculars, goggles and cameras that do not block infrared light as auxiliary fill light. Package List 1 x Battery Compartment1 x Tail Switch with Wire 1 x Battery Sleeve 1 x IR Flashlight