This Insignia™ NS-CAHBTEB01 headphone's Bluetooth 4.0 interface lets you pair with select Bluetooth-enabled devices from up to 33' away. The in-line controls and built-in microphone enable you to regulate the volume and communicate hands-free.
I am on my THIRD set of this headphone and once again it just completely stopped working out of the blue. I had to return the first one within 3d days because it stopped working. I thought maybe it was a fluke so I went and bought another pair with the warranty. Well not two weeks later, that one stopped working. I took it back and exchanged it for yet another one. INSIGNIA THREE STRIKES, YOU ARE OUT!! THIS PRODUCT COMPLETELY SUCKS! It isn't even worth the hassle of continually having to return it to the store. I workout hard and i sweat hard and these headphones are NOT good!