NC-520XP hearing-protection headsets (photo) are designed for use in demanding environments. They incorporate Dual Bluetooth, which enables the connection of two Bluetooth devices simultaneously (such as a smartphone or radio), enabling hands-free communication. This also allows users to listen to radio transmissions and still be reachable. The noise-canceling Push-to-Talk (PTT) boom microphone ensures clear speech even in the loudest of environments. The headsets also feature a user-friendly answer button and rotary switch for convenient control of ambient sound volume and incoming communication. The headset has a rechargeable power unit designed for maximum durability. — Savox Communications Oy, Espoo, Finland