Wireless Bluetooth Speaker - GrooveBox Black Wireless Bluetooth Speaker with NFC, DSP Equalization, Aux Input (3.5 mm) and Long Life Battery. Built-in powered 5.25" subwoofer offers amazingly deep and clean bass in a portable speaker. Dual, full-range, stereo drivers handle the mid-range and high frequency reproduction superbly. Elegant, hand-polished wood cabinet with glass top offers a unique and esoteric look. Real wood cabinet permits less resonance, which means the Groovebox looks and sounds better than the competition. Touch pad style buttons make powering on & off, adjusting volume and connecting your Bluetooth device a breeze. On-board DSP (Digital Sound Processing) from Dirac offers an accurate and vast soundstage, Rechargeable Lithium-ion battery plays back for 10 hours on a full charge. Recharges quickly in just 3 hours with the included charger. Quick and easy Bluetooth pairing (with LED indicator) at the touch of a button on any iPhone, Android, iPad, tablet or other Bluetooth enabled device. Just as easy to unpair, allowing another device to connect with the press of a button.