Sunglass Mp3 Player Music File: WMA/MP3 Sunglass:Polarized Lens, TR 90 Frame, Shock Proof and Anti-static electricity, against UVA/UVB/ UVC light Memory:256MB, USB Ver.2.0 Drive Hi-fi stereo earphone Integrated Microphone supporting ADPCM recording Battery: 230mAh/3.7V macromolecule polymer Li-ion rechargeable battery Battery Playtime: 2 hours for fully charged , 8 continuous hours playing time Colors for choice: Black/Pink/White/Blue Bluetooth function applied, compatible with bluetooth mobile and facilities.