TYLT TUNZ Rechargeable Bluetooth Speaker with NFC 2,800 mAh battery and universal USB charging port with 1Amp output for charging smartphones and other devices Built-in NFC with free App 3 interchangeable silicon bands in Red, Blue, and Black to easily personalize the look Up to 20 hours music play time Noise-cancelling Mic for hands free calls 2,800 mAh battery and universal USB charging port with 1Amp output for charging smartphones and other devices^Built-in NFC with free App^3 interchangeable silicon bands in Red, Blue, and Black to easily personalize the look^Up to 20 hours music play time^Noise-cancelling Mic for hands free calls