3 Wire Surveillance Kit for Kenwood NX300 – Waveband Communications
Amazon.com: KENMAX® 3ft 2-Wire Coil Audio PTT Mic with Tube Earpiece for Two Way Radios Kenwood TK-3140 TK-3148 TK-3180 K-5210 TK-5220 TK-5310 Nexedge NX200 NX300 : Electronics
Amazon.com: AOER G Shape Clip Ear Earpiece Headset with PTT Button & Mic for Kenwood Radio NX-210 NX-300 TK-285 TK-290 TK-380 TK-385 TK-2212 Multi-pin : Electronics