ECA01 Audio Details Technical Specifications Noise Protection HeadsetHeavy duty headset with microphone, offering noise protection with in-built speakers, protecting your hearing and allowing the user to operate the radio in noisy environments. Find a dealerHighlightsFunctionsTechnical SpecificationsMicrophone sensitivity -51dB ±3dB @1KHz, impedance 2.2KΩ, PTT cycles speaker ≥100000, speaker sensitivity 90dB ±4dB @1KHz, impedance 2 x 8Ω ±15% @1KHz, rated power 1W, maximum power 1.5WRelated Products MD782i