These bluetooth sports neckband headset is retractable, wirless sweatproof and has noise cancelling mic for iphones and android cell phones. It is made very well and all the materials are very sturdy. This headset is very easy to set up and get started using. The ear buds are retracable so it is easy to store and can be put in a backpack very easily. They are really neat looking, very impressive to say the least. It does so many different things. We were very impressed.