Prove your brand has power with Concerto : a combination Bluetooth speaker with the added bonus of smartphone charging capabilities. Measuring 6.8 x 4.0 x 1.45 inches, the stylish Bluetooth speaker can be paired to phones or tablets for 15 hours of quality sound from two 5-watt speakers. Use your phone's charging cable to connect to the Concerto to receive a back-up charge from the 4,400 mAh battery. Feature straightforward music controls, speakerphone capabilities, non-slip base and strap.