These headphones are equipped with the latest Bluetooth technology. The package includes ear tips in three sizes, ensuring a secure fit during sports activities. The annoying cable to the phone is eliminated, providing complete freedom of movement. If desired, you can even make phone calls while exercising. The surface of the headphones is rubberized and sweat-resistant. The built-in lithium battery lasts for 5.5 hours, making it suitable for a marathon run. The sweat-resistant, rubberized surface offers optimal grip during sports with comfortable ear tips in three sizes and is incredibly lightweight. They come with a control unit that has an integrated microphone for easy management of phone and music functions.