Universal Device Compatibility: Could Interface To Any Possible Device, Support Bluetooth, AUX, USB Drive, Micro SD Card (Up To 32G), Mobiles, Tablets, Laptops,PSP/MP3/MP4 EtcCard Reader And One Cable Function. It Uses USB Sound Card And Because Of The Same Card Reader And Charging Functions Can Be Achieved Via The Same USB. Super Battery Life Built-In 1200mAh Rechargeable Battery With Long Unplugged Play Time You Could Enjoy The Music News On The Go; It Is Designed For Sleek Simplicity, Attractive And Durable Compact.