The Klein Electronics Patriot Quick-Disconnect 2-Wire Surveillance Earpiece Kit has a 3 year warranty, TRUE noise reducing microphone with dual Push-To-Talk (PTT) buttons, and kevlar reinforced cables. Compatible with Motorola GP1280 GP140 GP320 GP328 GP329 GP338 GP339 GP340 GP360 GP380 GP640 GP650 GP680 HT750 HT1250 HT1250LS HT1550 HT1550XLS MTP700 MTX8250 MTX8250LS MTX850 MTX850LS MTX9250 MTX950 MTX4500 MTX4550 PR860 PRO5150 PRO5350 PRO5450 PRO5550 PRO5750 PRO7150 PRO7350 PRO7450 PRO7550 PRO7750 PRO9150 PTX700 PTX760 and PTX780 two-way handheld walkie radios.