... carry 3) A variety of color for choice 4) The speaker is designed for laptop/mp3/mp4/CD/phone We can ... . Features: ·Portable mini speaker suitable for IPOD,MP3 ,MP4 player, PC & Mobile Phone,MD,CD,PDA,PSP and other digital products with audio ... frequency output ·Built in rechargeable Li-ion baterry,can be recharged by USB Power ·portable ...