SkySmile 2 Pack Personal Identification Marker Light Tactical FMA Helmet Safety Flashing Signal Light for Outdoors Hunting Hikin

Personal Identification Marker Light 1.Tactical signal light with two modes of operation: always on and flashing. 2.Built-in CR2032 button battery, working for about 100 hours. 3.The product could works well in an environment from -20 C to 50 C. 4.This tactical signal light is an essential item for your outdoor activities, such as cycling, hiking, hunting, diving. Tips: Do not change the battery unless necessary, because to replace the battery, you need to re-solder the patch connecting between the battery and the motherboard contacts to use. Cut out the silicone to replace the battery will be not waterproof anymore. Daily preservation: Please keep it in a cool, dark place when not in use. Prevent exposure to the sun. Velcro may come off if it is not on a flat surface, like a helmet. It is recommended to secure with a strap, thanks.