EWA Mini Lightweight Portable Premium Sound Wireless Bluetooth Speaker with Rechargeable Battery - Enhanced Bass, Support Micro SD Card, Free 3.5mm AUX Line-in Cable (Black) Bluetooth synchronous broadcasting function Play music from Bluetooth devices including mobile phones, iPhone, iPod, iPad and Android Tablets, MP3/MP4 players, PC or MAC laptops PSP, etc Supports TF card (Micro SD card) for playback from built-in MP3 player Support A2DP, AVRCP, headset, hands free profile This portable MiniTune Speaker comes with a built-in Li-Ion 450 mAH Rechargeable Battery for up to 5 hours of playtime.