The LED flashlight keychain is made of environment-friendly plastic material, fastened by four screws. Energy-efficient LED that can shine for 25-50miles at up to 12 hours continual use. Come with 2x CR2016 replaceable batteries for each ring light. ON/OFF Switch and Squeeze Button, with smart convenient stainless steel hook for easy to hang. You can choose the light color, white or UV light, also you can custom other color. The flashlight key ring is delicately practical, and versatile enough to be used for camping, hiking, safety light or emergency.