Function: 1. 2. Constant current voltage stabilization: the controller adopts constant current voltage stabilization and anti-reverse connection, which solves the problem of failure caused by the reverse placement of positive and negative electrodes of the battery used. 3. Infrared: The infrared flashlight is not a white LED do general lighting flashlight. It emits infrared light that cannot be seen. You won't see any light with your eyes. 4. Simple shape: The appearance adopts simple shape, comfortable handle, one-handed control, simple and convenient operation. 5. Specification: Item Type: Infrared Flashlight Material: Aluminum Alloy Light bulb: 850nm LED Infrared light range: do 30-100 m / 98,4-328.1ft Weight: Approx. 160g / 5.6 oz Life expectancy: average 10 000 hours Mode: 1 mode Battery: 3 AAA or 1 18650 batteries (without battery) Product size: frame diameter 4 cm/1,6 feet, lamp tail diameter 3 cm/1,2 feet, contracted length 14,6 cm/5,7 inches, length after stretching 16,8 cm/6,6 inches Description: The LED chip of this flashlight turns red when it is highlighted, but the beam must be detected by night vision goggles or non-infrared filters. Focusing Infrared Flashlight 850nm Night Vision Instrument Camera Appendix Flashlight Monitor Light Source Appendix Light List of packages: 1 x lamp 1 x Battery Barrel No-AGO-12355420742