Easy to Use: The Bluetooth headset is designed for maximum comfort. The MFB, mute and volume buttons make it easy to answer incoming calls, distinguish between volume up and down buttons, and quickly access your favorite features Advanced Noise Canceling: 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 With Bluetooth Adapter and Compatible with a Variety of Bluetooth 5.2: PrancyBt Wireless headset for computer, PC, laptops, cell phones, and other devices. Connecting to a computer via a Bluetooth adapter will be more stable, with no transmission delay. NOTE: the adapter can only pair with the KH120M Bluetooth headset