Feature:1. [Secure Fit] Helmet headset has a sturdy construction. Can only be worn on the left ear. Three adjustable suspension straps provide a comfortable fit and stability.2. [Comfortable Design] Helmet earpiece with flexible boom microphone, comfortable headband. Breathable ear cushions enable peripheral hearing. The sound is clear and durable.3. [Application] Unilateral headphone is ideal for outdoor activities such as hunting, CS, paintball, etc. Standard military version plug. Allowed to be worn under your helmet or hat.4. [High Strength] The U94 PTT part adopts high strength PTT, which can be pressed continuously for 30,000 to 50,000 times. The button activates the PTT unit, which can be hung on clothing or belts.5. [Compatible] Helmet unilateral headset is compatible for XiR P6600 P6620 DP2400 MTP3250, etc. Cold resistant PU tensile wire, with high flexibility and toughness.How to Use:Plug and play.Specification:Item Type: Helmet HeadsetMaterial: ABSFrequency Response: 150Hz-500HzSensitivity: 46-60dBImpedance: 8 OhmsApplicable: Suitable for XiR P6600 P6620 DP2400 MTP3250 DEP550 DP2400 MTP3550 MTP3150 Package List:1 x Helmet Headset1 x Nylon Belt1 x U941 x Finger Microphone1 x Fixed Cable Tie