1. 16 frequency channels available, UHF: 400~480 MHZ
2.Certified Noise Reduction Rating: SNR 28dB
3.Easily replacable Hybrid Memory Foam Earpad
4.Noise canceling SPK&MIC,perfet noise cancellation
5. Need to keep pressing the PTT to speak, allow 6 people talk in the same time.
6. Wireless hesdset, with charging port.
7 Application for Aviation, Industrial, racing sports, and high noisy places.
