... ,extendable mini speaker stereo speaker2.It's ideal portable speaker systems, with unique design and it's direct factory sale.3. Compatible with ... mobile phone,mp3,IPOD,4. Built in 3.5mm audio cable, enabling great convenience and ... ,MP3 ,MP4 player, PC & MOBILE PHONE,MD,CD,PDA,PSP and other digital products with audio frequency output ·Rate power: 2W ...