KENMAX 3' 2-Wire Coil Audio Tube Earpiece with PTT Mic + Silicone Earbuds for Two Way Radios Kenwood TK-3140 TK-3148 Nexedge NX200 NX300 Lapel PTT, easy and convenient to wear Clear sound performance without distortion With large ptt, and changeable eartip and acoustic tube 2-Wire Design for the ability to split mic and speaker wires. Compatible with : Nexedge NX200/300, TK-190, TK-2140, TK-2180, TK-280, TK-290, TK-3140, TK-3148, TK-3180, TK-3180, TK-3212, TK-380, TK-385, TK-390, TK-480, TK-481, TK-5210, TK-5210, TK-5220, TK-5310, TK-5320 and TK-5400