Product detailed introduction： ID: PMB-7580 (Multi-Media Player) Category: OEM/ODM Speaker Code: PM7580 This product is specially the audioamplifier which designs for the multimedia handset, it uses the American SGS-THOMSON chip designs, the line had guaranteed outside the high quality acoustic fidelity had has exempted raises, the charge, automatically meets listens to and so on the formidable function. Well Performance;Stable Quality. For use with: Sony Erison K750i/K7580i/W800i/W550i Products Specification Reference: Output S.P.L:93 _ 3DB PO:1 1W S/N:98DB Frequency Range:200HZ-20KHZ Own appearance patent PMB-7580 Multi-Media PlayerProduct Detail The Multi-Media Player ( PMB-7580 ) is designed for Sony Ericsson W800i/K750i/D750i/W550i/W600 handset. The features of PMB-7580 Multi-Media Player are small size, light, good sound quality and user friendly. The high quality of stereo sound output and the outstanding are suitable to use in office and home environments As a multi media stereo speaker, PMB-7580 equips Digital Sound Adjustor function which maximizes the absolute sound output from your phone. By this invention, you and your friends can both fulfill the acoustical and visual satisfaction when sharing the movie in the phone. Its stereo sound effect also brings a real sound from FM radio and give charging simultaneously.