LONG-LASTING: keychain light is USB rechargeable without changing batteries, powered by lithium battery. Run for more than 2.5 hours on a 15-minute charge. All USB charging ports are available SMALL BUT BRIGHT: Mini flashlight keychain up to 50 lumens. These mini touch flashlight are very lightweight, portable and can be put into your pocket or to hang on your key chain, badge, backpack, etc, so any rechargeable keychain flashlight is perfect for home, work, outdoor activities or emergencies