LUXA2 GroovyT Magic Boom Box Speakers for Smartphones - Retail Packaging - Black Simply place your smartphone in alignment with the device and speaker sensor and if by magic, booming quality sound is played. Unique angular sound vibration technology directs the audio from your device and enhances it via the GroovyT Magic Boom Box system to provide enhanced audio output. Powered by an 800mA lithium polymer battery, the GroovyT Magic Boom Box offers 5 hours of quality audio play time for your smartphone device. To fully charge, only 3 hours is required. Increase your Gaming Experience with Groovy T by revving up the speed demon inside you to leave your rivals eating your dust!