IFeng Bodyguard FBI PTT Earpiece for Motorola HT750 GP140 MTX850 PR860 Series Easy to Carry and Use---Has a remote microphone with push to talk button you can clip anywhere. With Iron Clip---The iron clip PTT can easily be worn on the body and easy to talkback. 2 Wire Cable---This is a Medium Duty 2-wire PTT earpiece with acoustic tube for Motorola radio. Suitable environment---This 2-wire earphone kit provides excellent durability, reliability and performance in a noisy environment. Because of this characteristic, it is very suitable for use in applications where High sound clarity is required. Compatible Radio---HT750, HT1250, HT1250LS, HT1550XLS GP140, GP320, GP328, GP329, GP338, GP339, GP340, GP360, GP380, GP640, GP680, GP1280 MTX850, MTX850LS, MTX900, MTX950, MTX960, MTX8250, MTX8250LS, MTX9250 PR860, PRO5150, PRO5350, PRO5450, PRO5550, PRO5750, PRO7150, PRO7350, PRO7450, PRO7550, PRO7750, PRO9150, PTX700, PTX760, PTX780