This design is right for you if you want to enjoy wireless music but aren't happy with how Bluetooth boomboxes sound or simply prefer making your own things (i do, too!) This efficient amplifier box is powered by the common Sony NP-F compatible LiIon batteries and pumps out 15W of audio goodness to each of the two stereo speakers! Connect with any Bluetooth-enabled device and you'll be ready for literally days of music playback from a single battery. Showcase and electrical wiring: https://www.youtube.com/watch?v=s7uu1jYFZ_M