The X-mini II Capsule is a portable speaker that facilitates a clear surround sound. This X-mini speaker, with a 3.5 mm jack, can be connected to your mobile phone, MP3 player or laptop to deliver high-quality sound. Furthermore, the Bass Xpansion System in this portable speaker offers you an enhanced audio performance. You can listen to your favorite music continuously for up to 12 hours with the battery in this X-mini speaker. The X-mini II Capsule features a buddy jack design that allows you to connect a series of X-mini Capsule Speakers together for an awesome music experience.