The Muse# (Muse Sharp) is a great value, nothing near the price comes close. 30 easy to use built-in sessions, room for up to 25 downloaded sessions. Includes all cables necessary to hook up to external sound source or a computer. Free Librarian software with additional sessions for downloading is available from this web site. With session time adjust feature and the new 5 & 10 minute mood fix sessions. Downloadable, manual control mode. Compact, with 4 AA removable batteries. For more details and list of Muse Sharp relaxation, meditation, learning, creativity, peak performance or sleep sessions follow the Muse# (Sharp) and also the Muse Sharp Session library links.