INFRARED FLASHLIGHT LED 5CM Function: 1. Rotate the head of the flashlight to enlarge and reduce light to zoom in and out. 2. Plain waterproof standard O-ring seal, waterproof, can be used on rainy days. 3. Lowering direct current, the two-system DC-DC converter has high efficiency. Replace the battery when the light is too dark. 4. Infrared Focusing Flashlight 850nm Night Vision Instrument, Camera Filling Bulb, Monitoring Light Source. 5. Widely used in outdoor activities such as mountain climbing, camping, hiking, forest exploration or used at home, e.g. Do repair or find small things. Specification: Item Type: Flashlight Color: as shown in the pictures Product Size: approx. 13,6-15,8 cm / 5,4-6,2 inch (length of extendable flashlight) Lamp head diameter: 3,5 cm / 1,4 inch Weight: approx. 165g / 5,8 oz Material: aerospace aluminum alloy Lens: transparent magnifier with anti-reflective coating Bulb: 5W 850NM Infrared light range: do 30-100 meters / 98,4-328,1 feet Working time: 1,5-5,5 hours (depending on battery capacity and mode selection) Lifespan: average 10000 hours Operating voltage: 0,8 V-4,2 V. Power supply: 3xAA or 1x18650 (without battery) Switch: end cover switch button 3. Purpose: Mainly used do night vision devices, infrared cameras, etc. Infrared flashlight is used do auxiliary shooting without light (the shooting function itself does not work), infrared night vision, auxiliary equipment do night vision lighting and auxiliary lighting equipment do infrared shooting. When operating at 850 nm, there is a red storm, and at 940 nm there is no red storm. The so-called red storm refers do whether the wick sees red light in the working state. When the 850nm wick works, you can see that the wick is a red dot, but you will not see the light emitted. 940nm is almost no wick light and no light is emitted, but the shooting effect of 850nm is better than 940nm. As for the exposure distance of the flashlight: how many meters an infrared emitting tube can have is a system problem, we cannot just say how many meters it can be, it is also affected by the size of the group of lamps, circuit, camera, lens, etc. List of packages: 1 x Flashlight 1 x Battery Conversion Case 1. This portable flashlight is not a lighting flashlight, but an infrared flashlight. It is mainly used do fill the light of a night vision instrument or thermal imaging camera. This model cannot fill the light of the mobile phone camera. When it comes to the exposure distance of the flashlight: how many meters an infrared emitting tube can have is a system problem, we cannot simply say how many meters it can be, it is also affected by the size of the group of lamps, circuit, camera, lens, etc.