XINGDONGCHI Magnet Fineblue Mate7 Mini Bluetooth Wireless Headset Stereo Headphone Sport Outdoor Bluetooth V4.0/4.1+EDR Ergonomically Stereo In-Ear Handfree Earphone Headset with Mic (Black) 1. Bluetooth Specification: bluetooth 4.0/4.1 2. In ear style, very convenient when driving and doing sports 3. English voice prompt and echo cancelation 4. Multi-point technology connecting the two smart devices at the same time 5. Main Function:Headset head to suck Stereo sound swich machine in Enlish and Koream Switch Suer-long Standby call Chinese Newspaper a perfect connection