SUMDY Bluetooth V4.1 Headset with Mic Wireless Stereo headphone In-ear for Gym,Sports&Excercise,Workout & Running,for Iphone Andriod Black Advanced Technology,The buletooth headphone ensure clear speech within 10 meters and high-fidelity stereo music . Protect the earbuds when you during runing and workuots have sweat. Easy to use it, Great for listening music,other you can answer mobile phone calls as they come in by pressing the button on the ear piece. High quality,guarantee you enjoy a clear sound in noisy occasion. Special and flexible design custom earbuds will ensure you enjoy it and remain stable in your ear