Specifications: Product type: USB Call Center Headset with Microphone Plug: USB Cable length: approx. 2.5m Earmuff rotation: 330° Microphone: YES Impedance: 150? Dual speaker design: Support Sensitivity: 100dB Headset cable material: PU Suitable: For computer, telephone, desktop box, other devices Package size: approx. 19 * 14.2 * 3.8 cm/ 7.5 * 5.6 * 1.5 in Package weight: 198g/ 7.0oz Package List: 1 * Call Center USB Headset 1 * English User Manual