AT&T Hot Joe Portable Wireless Speaker for Smartphones - Retail Packaging - Blue Over 4 hours of operating battery life Bluetooth 2.1 connectivity for any Bluetooth enabled smartphone, tablet or computer Light and compact design gives Hot Joe ultimate portability Features a rechargeable battery so that you don't have to waste your time or money buying new batteries If your device happens to not support Bluetooth connectivity, Hot Joe has you covered with a 3.5mm auxiliary input Over 4 hours of operating battery life