Mini Butterball Bright Infrared Led Flashlight WF-502B 3 Core 3W 850NM Infrared Flashlight IR Lights with 18650 Rechargeable Battery and a Charger for Night Vision Device Camera The wick of the flashlight is made of 3W infrared lamp of 850nm. Its lifespan is up to 10,000 hours or more, so there is no need to consider replacing the cap for the whole life. The light is invisible to naked eyes. Illuminates with night vision equipment. Night vision instrument fill light function, camera fill light function. Suitable battery types: 1 x1 8650 3.7V Li-ion battery (include) The flashlight is small enough to fit in your pocket, handbag, or car compartment, so you can take it with you wherever, whenever. Use with night vision goggle, night vision camera, digital camera, great source for IR source lighting.