Professional Heavy Duty Shoulder Remote Speaker Mic Microphone PTT for Motorola GP328Plus GP344 GP388 GP688 Radio Professional Heavy Duty Shoulder Remote Speaker Mic Microphone PTT For Motorola GP328Plus GP344 GP388 GP688 Radio 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 two way radios walkie talkie that required Motorola Multi-Pin plug. Including GP Series: GP328+, GP328Plus, GP338XLS, GP340+, GP340plus, GP344, GP344R, GP366R, GP388, GP388R, GP628+, GP628Plus, GP644, GP688, EX Series: EX500, EX560, EX560XLS, EX600, EX600XLS, PRO Series: Pro5150 Elite, PRO 5151 Elite, PRO7150 Elite, PTX Series: PTX700 Plus, PTX760 Plus, GL Series: GL200, GL2000