Feature: 1. MATERIAL: U94 PTT part adopts high strength PTT, which can be pressed continuously for 30,000 to 50,000 times. The wire is made of cold resistant PU tensile wire with high flexibility and toughness. 2. NOISE REDUCTION: 7.1mm motorcycle bilateral helmet headset, used in conjunction with motorcycle helmets. The microphone reduces noise and the sound is clearer. 3. COMFORTABLE: This motorcycle helmet headset has stereo and good sound quality characteristics, which provides great comfort to your ears. 4. EASY TO USE: The motorcycle headset has a hook and loop, easy to fix, very durable and easy to use. With a clip, it can be hung on clothes or belts. 5. SCOPE OF APPLICATION: Helmet headset + U94 PPT with a button to activate the PTT (Push to Talk) device. Suitable for Xiaomi 1S/2S walkie talkies. How to Use: Plug and play Specification: Item Type: Helmet Headset + U94 PPT Material: ABS Colour: Black Frequency Response: 150Hz-500Hz Sensitivity: 46-60dB Impedance: 8 Ohm Application: Suitable for Xiaomi 1S/2S Walkie Talkies Package List: 1 x Helmet Headset 1 x U94 PPT