X-mini II Capsule Speaker.The award-winning X-mini II Capsule Speaker introduces a larger 40mm driver to project richer and fuller sounds resulting in superior end-user experience from its innovative capsule design. Be it for individual or group entertainment, the X-mini II Capsule Speaker is the perfect audio enhancement for any music or video player of your choice. Playback time tripled to 11 hours for longer, superior on-the-go audio Not only does the new design deliver unsurpassed audio quality, it now performs even longer. Three times the capacity of its predecessor, the new X-mini II Capsule Speaker comes with a new built-in high capacity rechargeable battery capable of sustained output for 11 hours of nonstop audio pleasure.Modular Buddy-Jack design: connect a row of X-Minis II for jaw dropping audio.