• Works with any smart phone or tablet • Connects using wireless technology • Master and bass volume control • Aux-in audio jack (connection cable not included) • Micro USB DC jack (DC 5V/ 1A) to connect to your own power supply for play (connection cable not included) • Can be used with x 4 AA Batteries (not included) for a play time of up to 3 hours • Sand and water resistant • 6.69 in. x 3.15 in. x 7.87 in.