Advanced noise-canceling technology reduces unwanted low frequency background noises, allowing you to focus on your music, movies or phone calls without distraction. Your voice will be heard loud and clear in all your calls, no matter how noisy your surroundings It is the perfect choice for remote workers. Note: The mute button can only be used on cell phones, if you want to mute on Skype or other calling software on PC, please set it through software.