The LED flashlight keychain is made of environment-friendly material, up to the standard of CE/RoHS and has passed ISO9001 quality management. The battery that can shine up to 12 hours continual use and if used only occasionally at night, it can be used for half a year. The life of the lamp bead is so long that can up to 5000 hours.Come with 2x CR2016 replaceable batteries for each key ring. ON/OFF Switch and Squeeze Button, with smart convenient stainless steel hook for easy to hang. You can choose the light color, red, blue, green and white light with lighting function, and purple light as known as UV light with inspection and anti-counterfeiting function. The flashlight key ring is delicately practical, and versatile enough to be used for dog light, camping, safety light or emergency.