Nakamichi My Mini Plus Portable Mp3 Stereo Cube Speaker--Yellow USB line-in mini speaker for your music device (mobile phone/MP3 player/iPhone/iPod) Plays MP3 music with MicroSD card Built-in lithium battery chargeable via USB Built-in FM Radio Earphone jack: 3.5 mm Cube Design Size: 5 x 5 x 5 (cm) /Color: Yellow