The CBH037 Bluetooth stereo sport earphone is a light and portable earphone. The specially designed ear piece has an ergonomic shape and is designed to fit nicely to your ear, and it is comfortable to wear. The earphone is made with sweat-proof material and it is suitable to use while you are exercising. The earphone is compatible with smartphone and devices that use Bluetooth 4.0, it has a mic for answering calls. It is rechargeable through a micro USB port and a charging cable is included.