The iBall Music Boat is a portable speaker with multiple inputs designed to redefine high quality music and style. The speakers come as a single unit and host a LCD screen which gives the information on time, FM and volume functions. It also features a USB port so you can connect the flash drive directly to the speakers. Other connectivity features include a 3.5 mm audio jack for connecting mobiles and iPods. The in-built lithium ion battery provides a good back up of approximately four hours on a single charge and can be charged. The MMC card slot allows you to play music directly from a memory card.