X-Mini XAM8-R Portable Capsule Speaker v1.1, Mono, Red Bass Xpansion System (BXS) - supports the 36mm drivers in delivering that much needed bass on mini portable speakers. 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 6 hours of continues playtime using its embedded rechargeable battery. Charging USB cable is included.