- Wireless in-ear headphones for music playback with integrated telephone function and Bluetooth ,- 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 ,- Silicone ear pads in S, M and L for a comfortable and secure fit ,- The special Sportfix design of the earpiece ensures a firm and secure grip in the ear - ideal for during sport, for example: the silicon clip also secures the in-ear headphones in the ear ,- Also for wireless stereo via audio streaming (A2DP, HFP, HSP, AVRCP) ,- Up to 4.5 hours of music or telephone function ,- Up to 400 hours in standby ,- Simple toggling between music and telephone calls ,- Passive noise reduction , ,System Requirements: ,- Bluetooth-enabled playback device, e.g. smartphone