Poly Ultra-secure Wireless Dect Headset System - Microsoft Teams Certification - Stereo - Wireless - DECT 6.0 - 590 ft - 20 Hz - 20 kHz - Over-the-head - Binaural - Ear-cup - Noise Cancelling MicrophoneTAA Compliant Kenwood NX-411 Lapel Speaker Mic The 420-440 MHz UHF band

The 420-440 MHz UHF band is popular for amateur radio (70cm band)

consider these upgraded options:

Power Ratings: 150 watts

the lightweight and comfortable behind-the-head earmuffs feature low-profile earcups that fit well with most helmets

Poly Ultra-secure Wireless Dect Headset System - Microsoft Teams Certification - Stereo - Wireless - DECT 6.0 - 590 ft - 20 Hz - 20 kHz - Over-the-head - Binaural - Ear-cup - Noise Cancelling MicrophoneTAA Compliant Kenwood NX-411 Lapel Speaker Mic The 420-440 MHz UHF bandULTRA SECURE WIRELESS DECT HEADSET SYSTEM BENEFITS Exceeds enterprise security expectations designed to meet the highest level DECT Security Step C enhanced with Military level FIPS 140 2 listed features, such as 256 bit AES encryption Deploy more headsets with ease up to 2x better density compared to other DECT headsets Keep nearby conversations private with a noise canceling microphone enhanced with Poly Acoustic Fence technology that meets