With the Citeco Bluetooth Earmuffs Press-to-listen function engaged, ambient sound and conversations can be heard without removing the earmuffs while keeping this noise at a safe level. It also comes with Bluetooth connectivity, so you can pair the earmuffs with your phone, listen to music and make/receive phone calls using the built-in microphone. The Citeco Bluetooth Earmuffs protects from exposure to loud sounds while operating power tools, leaf blowers or mowing the lawn.