It is stereo speaker for smartphone of 3.5 . It is more of high-quality sound and can listen to music of smartphone. It is round speaker which we want to pick up unintentionally. We prepared five colors that were particular about color. It is speaker of the high output with a built-in amplifier. As it is the high output of 300mW X 2, it is most suitable to listen to music of smartphone. We insert in earphone Jack (3.5 correspondence) of smartphone and iPhone and just turn on power supply. Please play favorite music afterward. It is compact and is design which realized lightness and simplicity. It is cute design which becomes into a ball of palm Dimensions which is convenient for storing and carrying around form when we fold. We connect attached Charge cable to the body and can easily charge from USB. It embeds rechargeable battery and is () for Continuous Play Time up to five hours. We realized enough reproduction time to listen to music at home. As it carries passive mode, speaker power supply including running out of battery of emergency is OFF, but can enjoy stereo sound by the earphone output of smartphone.