With an earbud that fits in the ear and a microphone that attaches to your lapel. Compatible with all Cobra single pin accessory handhelds.  For microTALK radios with 1-pin only

Like These Models:

• PR240
• PR245
• PR350
• PR375
• PR550
• PR3000
• PR3100
• PR3175
• PR4000
• PR4200
• PR4250

Marine Radios:

• MRHH100
• MRHH200