MiiKey MiiSport Grey  Wireless Bluetooth 4.0  Headphone with Microphone ,Built-in MP3 player,Supports Micro SD,Sweat-proof and HD Audio Bluetooth 2.0 & higher devices: iPhone/iPad/Android/Blackberry/Bluetooth gaming consoles like PS3/other cellular phones , Sweat proof sports design , Over-ear, behind the neck flexible headband, Voice prompt lets you know MiiSport's status Playlist on-the-go with built-in mp3 player and Micro SD card slot up to 32GB , no need to connect to audio device, Can connect to two compatible devices simultaneously, USB to Micro USB, Built-in Smart-talk compatible with Siri, HD stereo sound Headset and Hands free , A2DP and AVRCP, Voice prompts for device functions, High-grade sponge ear cups for soft comfort, Headphone battery strength displayed on your smartphone , Compatible with any Bluetooth device