KENMAX Waterproof Rainproof Shoulder Remote Speaker Mic Microphone with Headphone Jack for Walkie Talkie Motorola DEP550 DEP570 Tetra MTP3200 Tetra MTP3250 XIR P6600 Talk and listen without ever holding your radio. Built-in PTT and microphone is very handy Radio can be placed anywhere with Microphone/Speaker conveniently located - wear it on your collar to keep the volume near your ear Push-to-talk button and microphone are located on the accessory for quick and easy use. Great for noisy AND quiet areas because speaker is located right near user's ear. Compatible With Motorola Radio: XIR P6620 XIR P6600 E8600 E8608 XPR3300 XPR3500 etc.