... no drivers8. Compatible with laptop, iPod,MP3,MP4,MP5,cellphone,PSP etc. via 3.5mm audio cable9. Dual power supply ( USB 5V or ... 3*AAA batteries) Features:1. MP3 Digital decoder chip2. Anti-magnetic speakers ... circuit protection and thermal protection6. Dynamic Bass System, stirring sound with clear effect7. Not only an elegant portable speaker, but ...