X-Mini KAI XAM11-B Bluetooth Portable Capsule Speaker, Black. Play your favourite tunes from any Bluetooth-equipped device while you control tracks and volume wirelessly. Stowaway:3.5mm cable to get connected to your music source. Buddy jack as many as you like for more fun. Long lasting - Up to 8 hours of continues playtime using its embeded rechargable battery. Charging:USB cable and carry pouch are included. 40mm Drivers. Rechargeable. Bluetooth. Built-in Lithium battery. Wireless.