PR240, PR245, PR260, PR350, PR375, PR385, PR550, PR560, PR580, PR590, PR3000, PR3100, PR3175, PR3180, PR3500, PR3550, PR3575, PR4000, PR4200, PR4250, PR4300, PR4700, PR4750, PR5060. This G-Shape Earhanger Earphone with Inline Push-to-Talk Microphone for Two-Way Radio provides clear voice transmission and excellent focused sound quality.
eBay