Headset, TRRS, Dual Over-ear for Hard-hat

Dual-muff, hard-hat headset microphone for use with Digi-Wave DLT 400 transceiver only.   MIC 188 Microphone Element Type Electret, noise cancelling Impedance 680 ? @ 1kHz Signal-To-Noise Ratio 58 dB Sensitivity -47 dB Headphones Impedance 32 ? DCR Typical Rated Input Power 60 mW – 100 mW Frequency Response 250Hz-4000Hz Plug 3.5 mm stereo TRRS with 360º strain relief Ear Cushion Gel, Soft, Circumaural Color Black Approvals WEEE, CE, RoHS Warranty 90 days