... /MP4 Player 2. Built-in rechargeable battery Speaker for Cell Phone Sound Amplifier for Computer Notebook Laptop MP3/MP4 Player Features:1. Music ... Speaker suitable for mobile phone MP3,MP4,MD,CD,PC , ... x Charge cable1 x Audio cable1 x BoxPictures: Speaker for Cell Phone Sound Amplifier for Computer Notebook Laptop MP3/MP4 Player