DKnight Magicbox Ultra-Portable Wireless Bluetooth Speaker,Powerful Sound with build in Microphone, Works for Iphone, Ipad Mini, Ipad 4/3/2, Itouch, Blackberry, Nexus, Samsung and other Smart Phones and Mp3 Players [Upgraded with standard "Beep" sound prompts. Supports Wireless Music Streaming via New Bluetooth v3.0 Technology. Two highly powerful 40mml total 6W acoustic drivers and ultra-small size produce a wide audio spectrum Built-in Li-Ion Rechargeable Battery for up to 10 hours of playtime. Built-in microphone for hands-free speaker phone calling. Easy to pair - No code/pin needed Easily to carry with, only 8.3 ounces.Plays all Audio devices through 3.5mm Aux in Jack. Build in Mp3 player included, it could automatically play the music with a stand alone Micro SD card.