Rolly is a new style of music player that proposed the concept of enjoying music through touch and sight as well as sound. The palm-sized, egg-shaped body with no complicated switches or wiring, incorporates horizontal opposite-positioned stereo speakers, as well as a built-in flash memory and battery. This avoids the annoyance of electric power cables and allow users to carry it around to listen to music wherever they want. Operating buttons on the main body consist only of the power switch and play button. Song selection and sound level adjustment is done by moving the unit or rotating a part of it.