These earbuds are easily linked via Bluetooth, so that you can not only listen to your favorite music, but you can even make calls. This is due to the built-in microphone. This microphone is integrated in the earbuds and points downwards. This way your voice will be picked up as well as possible. The headphones are operated by the simple touch keys on the cable of the earbuds. These earbuds have a perfect fit and are therefore secure in your ears. Ideal if, for example, you are going to run. In addition, these ears are also sweatproof. The earbuds last for 9 hours. Should the energy run out after 9 hours, connect the earbuds with the micro USB cable (included) and connect it with a device with USB charge function. After 1,5 hours you are ready to go. The Lenco EPB-030 Sweatproof Bluetooth earbuds are a real musthave.