Feature:1. [Comfortable To Wear]‑3 adjustable suspension straps provide comfortable wearing. Flexible cantilever mic and comfortable headband.2. [On the Left Ear]‑The unilateral headphones can only be worn on the left ear. High quality ventilate ear pad enables peripheral hearing.3. [Standard Military Plug]‑ A standard military plug. The minimalist design allows it to be worn under your helmet or hat. Great for outdoor activities.4. [High Flexibility]‑The PTT part can be pressed continuously for 30,000 to 50,000 times. Cold resistant PU tensile wire, high flexibility and toughness.5. [PTT Device]‑Press the button to activate the PTT (Push to Talk) device, can be hung on clothes or belts. Suitable for 3.5mm mobile phone plug.How to Use:Plug and play.Specification:Item Type: Motorcycle Helmet HeadsetMaterial: PU+PTT+ABSFrequency Response: 150Hz-500HzSensitivity: 46-60dBImpedance: 8 OhmConnector: 3.5mm mobile phone plugApplication: Suitable for 3.5mm mobile phone plug Package List:1 x U94 PTT1 x Motorcycle Helmet Headset1 x Nylon Tape