XPR Series XPR3000, XPR3000e, XPR3300, XPR3300e, XPR3500, XPR3500e. DEP Series DEP550, DEP570, DP2000, DP2400, DP2600, DP3441. [10x] Swivel Earpieces with Push-To-Talk Button. Push-To-Talk button and microphone provides clear voice transmission with great sound quality.
eBay