Feature:1. Rotate the head of the torch to magnify and shrink the light to zoom in and out.2. Ordinary waterproof standard O‑ring seal, waterproof, can be used in rainy days.3. Step‑down constant current drive, dual‑mode DC‑DC converter has high efficiency. Replace the battery when the light is too dark.4. Focusing infrared flashlight 850nm night vision instrument, camera fill light bulb, monitor light source fill light.5. Widely used in outdoor activities such as mountain climbing, camping, hiking, forest exploring, Or used at home like repairing or finding small thing.Specification:Item Type: Flashlight TorchColor: As Pictures Shown Product Size: Approx. 13.6-15.8cm/5.4-6.2in (length of retractable flashlight)Lamp head diameter: 3.5cm/1.4inWeight: Approx. 165g/5.8ozMaterial: aeronautical aluminum alloy Lens: transparent anti-reflective coating magnifierBulb: 5W 850NMInfrared light range: up to 30-100 meters/98.4-328.1ftRuntime: 1.5-5.5 hours (depending on battery capacity and mode selection)Life span: an average of 10,000 hoursWorking voltage: 0.8V-4.2VPower supply: 3xAA or 1x18650 (not including battery)Switch: end cover press switchThe LED chip of this flashlight turns red when illuminated, but the beam needs to be detected by a night vision device or a non-infrared filter.Light source: The light source under the detection of the mobile phone camera is light pink, which can detect whether the infrared flashlight is working properly or distinguish between the 850 band and the 940 band (note: this model can not fill the light for the mobile phone camera)3. Purpose: Mainly used for night vision devices, infrared cameras, etc.Infrared flashlight is use