KHS-21 Lightweight Headset - for VOX operation Discontinued model Key Features For use with radios with built-in VOX functionality - has no PTT or sensitivity control Headsets, Earpieces EMC-12WClip microphone with Earphone and PTT (VOX ready)EMC-11WClip microphone with Earphone and PTTHMC-3Lightweight Headset with VOX & PTTHS-5Deluxe Headphones (1/4 inch plug)KEP-11ATAcoustic Tube with Quick DisconnectKEP-10ELEEar Loop with Adjustable Ear BudKEP-9DHD-ling Adjustable Ear HangerKEP-8SESwivel Ear Piece with Rotating EarphoneKEP-7EBEar Bud with Foam CoverKEP-1Earphone kit for KMC-25KEP-2Earphone kitKHS-41TWMPTwin Wire Multi-Pin with PTTKHS-40TW2PTwin Wire 2-Pin with PTTKHS-39SWMPSingle Wire Multi-Pin with PTTKHS-38SW2PSingle Wire 2-Pin with PTTKHS-33Earbud Headset with In-Line PTTKHS-34C-Ring Headset with In-Line PTTKHS-35FBoom Microphone with "D" Earpiece and PTTKHS-27D-Ring In-line PTT HeadsetKHS-22Lightweight Headset with Boom Microphone & PTTKHS-15D-OHHeavy Duty Headset (over-the-head / Universal)KHS-15D-BHHeavy Duty Headset (behind-the-head / Universal)KHS-14Lightweight Single Muff HeadsetKHS-12BLThree-wire Lapel Microphone with EarpieceKHS-11BLTwo-wire Palm Microphone with Earpiece.KHS-10D-OHHeavy Duty Noise Reduction Headset (over-the-head / 2-pin)KHS-10D-BHHeavy Duty Noise Reduction Headset (behind-the-head / 2-pin)KHS-10-OH-SDHeavy Duty Headset (over-the-head / 1-pin)KHS-9BLThree-wire Lapel Microphone with EarpieceKHS-8BLTwo-wire Palm Microphone with EarpieceKHS-8NCTwo-wire Palm Microphone (Noise Cancelling) with EarpieceKHS-7ASingle Muff Headset with Boom Microphone & PTTKHS-7A-SDSingle Muff Headset with Boom Microphone & PTT (1-pin)KHS-7Single Muff Headset with Boom Microphone