- Extra-small, silicone fit-in earphones adapt perfectly to every ear canal, with the Unisize ear buds in miniature format guaranteeing enjoyable wearing comfort and a firm grip ,- Passive noise protection shields out exterior noise ,- Remote function for music control (pause/play/forward/back) if supported by the telephone ,- Integrated phone function with call answer button and microphone for smartphones ,- Displays the headset battery state via the status bar of the smartphone as far as supported by the smartphone ,- Extra-lightweight Bluetooth headphones that can barely be felt while wearing ,- Flexible silicone headphones housing for extremely comfortable wearing, does not press on the ear when lying down, for example ,- Perfect for out and about thanks to the headset function