The sound of this bamboo bluetooth speaker is as natural as the Bamboo it’s derived from. It features a built in 2000mAh rechargeable lithium battery that delivers up to 8 hours of playback time at max volume.  With a 3 watt speaker output and built in music controls/microphone the speaker makes the perfect desktop speaker. The speaker comes in a retail inspired gift box along with a micro USB charging cable. Bluetooth working range is 30 feet.  Charge time: Up to 5 hours. Dimensions:  3.11" H X 2" W X 5.03" D