Superior Casing Design -- After reviewing tens of wireless speakers?? we've spent half an year working out this mould?? which is far more outstanding beyond most others.</br>20W Strong Bass -- Built with dual 10W 45mm 4ohm drivers and central bass radiator?? 80db max volume?? quality compares favorable with home audio system.</br>Up to 10h Music Playing -- High capacity 4??000mAh battery allows 7-10 hours music playing after 3-4 hours charging?? long lasting enough to entertain you for party?? camping?? boating?? hiking and more outdoor activities.</br>Advanced Bluetooth 4.0 -- Fast paired?? quick response within 33ft?? fluent signal trasmission wirelessly for mu