Qoltecs high-quality in-ear wired headphones have the function of muffling sounds from the surroundings. It allows you to completely relax while listening to music. It works with every device with a 3.5mm mini-jack connector. The 1.2m cable comfortably enables to put the connected device in your pocket or purse. A built-in microphone that lets you have frequent conversations without removing the smartphone from the pocket is an additional advantage.