Item Type: Phone Headset Material: ABS, Protein Leather Speaker Unit: Moving Coil Type NdFeB Magnetic Speaker Speaker Outer Diameter: Approx. 28 mm / 1.1 inches Speaker Frequency Response: 150HZ-4.5KHZ Speaker Sensitivity: 113±3dB (at 1KHz1mw) Speaker Impedance: 150Ω±5% Speaker Distortion: <1% Microphone Directionality: Uni-directional Microphone Frequency Range: 50HZ-3.0kHZ Microphone Sensitivity: -44±3db In-line Control: This wired phone headset features an elegant design with convenient in-line controls to answer, hang up, and adjust volume. Clear Sound: Equipped with a wideband noise reduction function, this headset restores call clarity and ensures clearer audio quality. Ergonomic Design: The business headset with a microphone can be rotated 330 degrees for precise positioning, ensuring optimal call audio quality. Noise-Canceling Microphone: Configured with a noise-canceling microphone, this business headset filters out high and mid-frequency noise for clear conversations. Soft and Comfortable: Binaural office headset with artificial protein leather earcups that are skin-friendly, soft, and comfortable, preventing allergies. Adjustable Headband: Lightweight steel rod headband with adjustable length and curvature to fit your head size. Features a black carbon steel grain arm for a more attractive look. 1 x Phone Headset