The Happy Capsule brings X-Mini sound & a handy built-in MP3 player together in one easy-to-use package. Super-portable, it also has a dedicated driver for powerful bass. Key benefits: One button operation makes powering up, changing volume & switching between tracks a breeze. The integrated MP3 player supports popular file types like MP3 & WMA A 40mm driver gives you pounding bass & a richer, fuller sound. An SD/SDHC card slot supports up to 8GB of storage. Get up to 12 hours of playback through the 3.5mm jack, or up to five hours when playing from an SD card. The BXS Bass Expansion System creates sub-woofer like bass with minimal distortion. Perfect for playing music at higher volumes. ‘ Buddy Jack’ lets you connect one X-Mini to another for virtually endless chaining. Great for parties & larger gatherings