Powerful Super Micro Mini Portable Bluetooth Speaker with Micro SD Card Slot & Audio Input Ports for PC / Phone / Tablet / Apple iPod Touch / iPad / iPhone 4 / MP3 Player (Red) Stream music from Bluetooth enabled devices such as cell phones, PDAs, MP3 players, PCs and laptops. Bluetooth Wireless connection range 33 feet. Support any audio device with 3.5mm audio input. Plays MP3 music directly from a microSD (TransFlash) memory card. Powerful built-in rechargeable battery up to 8 hours of playing time