Wireless, sweat-resistant in-ear headset for music playback, with integrated phone function and Bluetooth 4.1 ,- Sweat-resistant earphone allows intensive use and increases the durability of the product ,- Convenient cable-mounted volume control ,- Integrated phone function with call answer button and microphone for smartphones ,- Remote function for music control (pause/play/forward/back) if supported by the telephone ,- Displays the headset battery state via the status bar of the smartphone as far as supported by the smartphone ,- Allows simultaneous connection of the headset with two smartphones ,- For a secure, stable hold - e.g. also during sports activities ,- Also for wireless stereo via audio streaming (A2DP) ,- Up to 4 hours of music or phone function ,- Silicone earbuds in three different sizes (S, M, L) for an individual, perfect fit ,- Easy switching between music and telephone conversation ,- Passive noise reduction , ,System Requirements: ,- Bluetooth enabled mobile phone