UAYESOK Waterproof Radio Earpiece with Mic PTT Screw Thread Headset for Yaesu VX-6 VX-6R VX-7R VX-170 FT-270 HT Standard Horizon HX400 HX750S HX870 HX890 Handheld Marine Transceiver

Speaker size: 15mm Sound pressure level: 103 dB ±3dB Impedance: 32 ? ± 15% Audio output: 100mW Microphone size: 6.0*5.2mm Frequency response: 20-16000Hz Sensitivity: -36dB±2dB Impedance: 2.2K ? Compatible for YAESU Vertex Radio As Follows: VX-6 VX-6E VX-6R VX-7E VX-7R VX-120 VX-127 VX-170 VX-177 FT-270 FT-277 VXA220 VXA-300 VXA-700 VXA-710 SR40 SR45 SR70 SR70A SR100 SR100A VXD1 FTH-107 FTH-108 FTH-208 FTH-307 FTH-307L FTH-308 FTH-308L FTH-314 FTH-314L FTH-508; Compatible for Standard Horizon marine radio As Follows: HX210 HX270 HX270E HX290 HX370 HX370E HX370S HX370SAS HX380 HX400 HX400IS HX407 HX460S HX470S HX471S HX500E HX500S HX600S HX750E HX750S HX751 HX750 HX760S HX850 HX850E HX850S HX851 HX870 HX890 Compatible for Alinco Radio As Follows: DJ-P22 DJ-P221 DJ-P221M DJ-P221L DJ-P222 DJ-P222M DJ-P222L DJ-P240S DJ-P240L DJ-P300 DJ-R200D DJ-R200DS DJ-R200DL DJ-CH3 DJ-DPS70 DJ-DPX1; Compatible for Icom Radio As Follows: IC-4300 IC-4300L IC-4350 IC-4350L Package include: 1* Waterproof Screw Thread Earpiece UAYESOK Store(If you have any question.We will be happy to serve you,We will reply to you within 12 hours)