The Maestro wireless speaker with High Definition audio, built-in microphone, radio, and rechargeable battery allows for up to 6 hours of playing time. The Maestro delivers a total of 6 watts (2 internal 3W speakers) of powerful sounds with soaring highs and deep booming bass. The speaker 4.0 wireless and audio prompt technology makes pairing conveniently easy. The Maestro plays music up to 30 feet from any Bluetooth™ device such as your smartphone, notebook, or tablet.