Tenq Professional Heavy Duty Shoulder Remote Speaker Mic Microphone PTT for Motorola Radio XPR3300 XPR3500 XIR P6620 XIR P6600 E8600 E8608 MotoTRBO Professional Heavy Duty Shoulder Remote Speaker Mic Microphone PTT For Motorola Radio XPR3300 XPR3500 XIR P6620 XIR P6600 E8600 E8608 MotoTRBO Security Door Supervisor Talk and listen without ever HOLDING your radio! Push-To-Talk button and microphone are located on the accessory for quick and easy use. A strong swivel retaining clip on the back for convenience. Heavy duty and Compact Design. Compatible with Motorola Radio XPR3300 XPR3500 XIR P6620 XIR P6600 E8600 E8608 MotoTRBO.