Ultra-bright Keychain Flashlight: Each LED keychain light offers 12 lumens of brightness and 100,000 hours’ life-span. Perfectly light up areas up to 33 feet! Easy to Use: Simply push the On/Off switch forward to turn on the light. It’ll continue to light and illuminate the way ahead. No longer worry about walking at night. Replaceable Batteries: Each keychain flashlight is equipped with 2 CR2016 Lithium button cell. Each battery withstands 12 hours of continuous use. Replace the batteries by opening the shell from the bottom with a screwdriver. Light & Portable: Size: 1.67" L x 1" W; Weight: 0.3 oz. Easily attach the mini LED light to your keychain with the split ring and carry it around wherever you like. Wide Applications: Contain 20 mini LED flashlights altogether. Excellent lighting tools for outdoor night parties, camping, hiking, dog walking, repairing or emergencies. Ultra-bright Keychain Flashlight: Each LED keychain light offers 12 lumens of brightness and 100,000 hours’ life-span. Perfectly light up areas up to 33 feet!