EVOLVA FUTURE TECHNOLOGY T38 IR 38mm Lens Infrared Flashlight Light Night Vision Torch - Infrared Light is Invisible to Human Eyes - to be Used with Night Vision Devices INVISIBLE IR LIGHT: Evolva T38 is NOT a regular flashlight with white LED for general lighting purpose. Utilizing Osram Oslon infrared light black 850nm LED emitter, Evolva T38 emits invisible but high power IR light with more than one watt of optical power. Please beware that: you wont see any light with your bare eyes (only a small and faint red glow on the Osram LED to show you that the torch is on). LONG RANGE ILLUMINATION: Evolva T38 utilizes the OSLON IR black infrared LED - todays smallest and most advanced infrared LED with high efficiency, low thermal resistance, and more than one watt of optical power. T38 can produce a powerful punch with approximately 150 meters range (approx. 165 yards) with focused beam. With the latest chip technology, integrated lens and an excellent package, lifetimes of up to 50,000 hours are easily obtainable. ASPERICAL LENS: 38MM Lens rotary focusing function enable the ability to focus in for a tight spotlight or back out for a flood effect, especially designed for long range illuminations. T38 can illuminate much farther with focused beam, compared with illuminator without focusing functions. CAN ONLY BE POWERED BY 18650 BATTERY, NEVER USE CR123A: With operating voltage of 3.7-4.2V, T38 is powered by 1 x 18650 Li-Lon rechargeable battery. T38 cannot be powered by 2 x CR123A battery, as 2 x CR123A with 6V voltage will burn the driver board. Please carefully select the 18650 with genuine core as there are many 18650 batteries on the market with fake cores and of inadequate quality. SOLID AMD COMAPCT: Body made of Aircraft Aluminum Alloy. Housing Diameter: 1 inch (25.4mm).Fit with any 1 inch (25.4mm) ring and mount. Net Weight: 168g.Length:145mm. 3 Mode System from Low-Mid-High with mode memory (T38 remembers and turns on to the last setting that it is operated on). Evolva Future Technology T38 Infrared Light Flashlight with 38mm Focusing Lens Utilize the most advanced Osram IR BLACK LED with with latest chip technology, high efficiency, low thermal resistance, and more than one watt of optical power. 38MM Lens rotary focusing function enables the ability to focus in for a tight spotlight or back out for a flood effect, especially designed for long range illumination. LED: Osram Oslon Black IR 850nm Mode: 3 Modes from Low - Mid - High Mode Memory: Turn on to the last setting operated on Battery: 1 x 18650 rechargeable battery (CR123A NOT SUITABLE) Batteries Input Voltage: 3.7- 4.2V Waterproof: Splash Proof Only Housing Diameter: 25.4mm (Fit with any 1 Ring or Mount) Weight: 168g (without battery)