1[High Quality Material] High strength PTT, can be pressed continuously for 30,000 to 50,000 times, cold resistant PU tensile wire, high flexibility and toughness. 2[Big Speaker] Imported 3215% at 1kHz speaker, clear and deep sound, with multiple usage, suitable for jungle, field battle, outdoor riding and other scenes. 3[Portable] A button activates the PTT (Push to Talk) device, which can be hung on clothes or belts, it is sturdy and durable, suitable for half helmets and full helmets. 4[Adjustable] Bracket type throat vibration earphones, easy to shrink, coil size can be adjusted, can be adjusted according to the adaptation of the neck. 5[Noise Isolation] The throat vibrates to produce sound, even in very noisy and harsh environments, it also has a high degree of sound insulation. Item Type: PTT Headset System Material: PU + PTT Color: Black Application: Suitable for Hytera PD-780 PD-785 PD-788 PD-780G PD-785G PD-788G Speaker Specifications: Sound Pressure Level: 1083dB at 1kHz 1mW Rated Power: 50mW Maximum Power: 100mW Speaker Impedance: 3215% at 1kHz Microphone Specifications Sensitivity: -315dB at 1kHz 0dB=1V/0.316G Output Impedance: 120015% at 1kHz 1 x U94 PTT 1 x Telescopic Throat Vibration Microphone 1 x Earplugs 1 x Microphone Cable Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.