Mini mobile phone speaker 1.USB power 2.support TF card 3.Built-in FM radio 4.for laptop,mp3,mp4,mobile,computer, ... for iphone. Mini mobile phone speakermodel number:MA82761.Digital MP3 Player: TF card ... input: support for MP3, MP4, mobile phone, PC, etc.5.External high-performance rechargeable lithium-ion battery. 6.Multi-function keys: volume, ...