By using professional sound-cleaning technology can effectively reduce background noise, suitable for a variety of environments to wear;The 50mm full-wrap acoustic earcups are sensitive enough to record the slightest movement of the surrounding environment, helping you to avoid ambush and surprise!Equipped with an adaptive headband with adjustable elasticity for lightness and comfort to suit a variety of head shapes;Two-way adjustable suspension headband, lightweight, not easy to press the head, not easy to press the ears, reduce sweatingTinned layer to reduce oxidation, reduce signal loss and ensure audio clarityFeaturesProduct bare metal weight: 360GSpeaker diameter: 50MMImpedance: 323DBSensitivity: 105db3dbFrequency range: 20-20KHZMicrophone specification: 6*2.7MMMicrophone sensitivity: -42db3dbMicrophone resistance: 2.2K"1 point 2 transfer cable*1Manual*1Color box*1"