MiiKey brings you the most advanced stereo headphones in its class. With latest Bluetooth connectivity (Version 4.0) it's easier than ever before to pair your smart phone or any other Bluetooth device. MiiSport introduces high definition stereo sound all wirelessly. Experience extended highs natural mid-tones and powerful lows without any cords. With its deep base MiiSport is your personal club-on-the-go. MiiSport delivers the hi-def musical experience that an artist wants you to hear when it's produced. MiiSport is the answer to all your communication and musical needs. Features Audio Connectivity - Bluetooth 4.0. Universal Compatibility - Bluetooth 2.0 & higher devices: iPhone/iPad/Android/Blackberry/Bluetooth gaming consoles like PS3/other cellular phones. Personality - Sweat proof sports design. Build - Over-ear behind the neck flexible headband. Playlist on-the-go with built-in mp3 player and MicroSD card slot up to 32GB no need to connect to audio device. Can connect to two compatible devices simultaneously. Charging Connectivity - USB to Micro USB. Supported Bluetooth Profiles - Headset and Hands free A2DP and AVRCP. Voice prompts for device functions. High-grade sponge ear cups for soft comfort. Box Include - MiiSport carrying case charging cable user guide cleaning cloth. Non Foldable. Bluetooth Operating Range ft - 33. Battery Type mAH - 300. Battery Composition - Li-Ion. Built - in Cell. Battery Run Time for Talk Hrs - 10. Battery Run Time for Music Hrs - 8. Battery Stand By Time Hrs - 300. Battery Charging Time Hrs - 2-3. Speaker Frequency Response - 100Hz-20KHz. Speaker Impedance - 32O. Speaker Sensitivity 110dB. Speaker Rated Power - 20mW.