GOgroove SonaSPHERE Rechargeable Pocket Speaker System for Samsung , Motorola , HTC , LG and more Android Powered Smartphones ** Includes micro-USB Charge Cable** Powerful, portable sound that fits in the palm of your hand! Pocket-size design goes with you anywhere. Recharegable lithium-ion battery provides 2-3 hours of continuous audio per charge Durable, rubberized design - BUILT TO LAST ; Compact design EXPANDS to deliver enhanced bass and sound dispersion; On-board volume control allows for quick adjustment Links together with other SonaSPHERE speakers to increase total system power and fidelity - INFINITELY LINK THEM TOGETHER! Includes USB charging cable, micro USB phone Charging cable and carrying lanyard - GUARANTEED QUALITY - 3 YEAR WARRANTY