Pro Covert Acoustic Tube Bodyguard FBI Earpiece Headset Mic for Hytera Radio PD790 Ex PD780 PD700 Professional Acoustic Tube Bodyguard FBI Covert Earpiece Earphone Headset PTT(Push To Talk) with built-in line mic microphone for Hytera Radio PD790 Ex PD780 PD700 Security Door Supervisor. Clip this hands free earpiece onto your shirt and begin using your radio device to communicate discretely and easily, whether you're in security, retail, or hospitality. Provides excellent durability, reliability and performance in low-profile environment. Ideal for demanding covert security applications where sound clarity and earpiece durability are of paramount importance. Compatible with Hytera Radio two way radios walkie talkie PD790Ex, PD780/PD780G, PD700/PD700G, PT-580, PT580H.