PulsePak Battery Booster of up to 2 Hours for Micro-USB Smartphones - Retail Packaging - Black

Never be stuck with a dead phone again! PulsePak is the only rechargeable battery pack small enough to fit on your keychain. Simply plug PulsePak directly into your phone or device for up to 2 hours additional battery. PulsePak holds a charge for up to 3 months. Featuring a quick release clasp PulsePak is ready at a moment's notice to provide a power boost. For use with Micro-USB smartphones (Android, Windows, Blackberry etc.)