1[U94 PTT]The button activates the PTT (Push to Talk) device, allowing you to hang it on your clothes or belt for easy carrying. Suitable for half helmets, full helmets in the jungle, field battles, outdoor riding, etc. 2[Thick Sound and Adjustable Coil Size]Using Taiwan imported 3215% at 1kHz speaker, the sound is big and thick. Adjustable coil size can be adjusted according to the adaptability of the neck. 3[High Strength]The U94 PTT part uses high strength PTT, which can be pressed continuously for 30,000 to 50,000 times. Cold resistant PU tensile wire, flexible and strong in use. 4[Telescopic Throat Vibration Microphone] Bracket type throat vibration noise reduction headphones, ergonomic design makes the headset is comfortable to wear for a long time without any burden. 5[Noise Reduction]The throat vibrates to produce sound, and it has a high degree of sound insulation even when used in a very noisy and harsh environment. The surrounding noise will not be heard. Item Type: U94 PTT Headset System Adapter Material: PU+PTT Colour: Black Application: Suitable for Motorola T5428 6200C T80 and other 2.5mm walkie talkies 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 Earplug 1 x Microphone Cable