High Quality Mini Lightweight Portable Premium Sound Wireless Bluetooth Speaker with Rechargeable Battery - Enhanced Bass, Support Micro Tf Card with LED Light(S51U-Blue) Small and beautifully designed, Incredible sound quality lets you indulge in your favorite music, it is an ideal wireless solution to listening to your phone or tablet PC's music. High capacity built-in rechargeable battery, supports up to 7 hours of wireless playing time and convenient to carry, makes you freely enjoy the joy of music. Hands free function supports you answer your call without delay. Easy Bluetooth connection: Compatible With Bluetooth Enabled Devices: iPod, iPad, Tablet, laptops, Smart Phone Compatibility: Support MP3,WMA,WAV,MGP,FLAC,APE and more music format, making you freely enjoy the music.