Sports Bluetooth stereo Earphone Headset for Samsung Galaxy S4 S3 S2 S1 Note 2 and other Blurtooth Phones --Rechargeable and Portable Quick search and reading speed, Bluetooth with minimum number of button, just 3 buttons Not easy to fall down when wearing on your head, No rope, it's convenient to do any sports When the phone call comes, you can answer it so long as you press the play button High sensitivity, omni-directional microphone design, clear voice, no echo