Product Number CH-331 Headphone Driver Diameter 50mm Headphone Frequency Response 20-20,000Hz Headphone Impedance 16Ω Headphone Sensitivity (@1kHz) 103 dB ± 3 dB Headphone Input Maximum 30mW Headphone Cable Length Approx. 2.2m Headphone Connector USB Type A Headband Material Steel and plastic headband, PU leather and foam cushion Headphone Ear Cushion Material PU Leather Headphone Supply Voltage USB 5V ± 0.25V Microphone Pick-up Pattern Omni-Directional Microphone Frequency Response 100 - 8,000 Hz Microphone Sensitivity (@1kHz) -40 dB ± 3 dB Microphone Signal to Noise Ratio 58 dB Microphone Type Detachable Flexible Microphone Physical Dimensions (L x W x H) 179.4 * 96.3 * 210.1 mm / 7.06 * 3.70 * 8.27 inches Physical Weight 371.2g / 0.82 lbs (Including Cable), 294g / 0.65 lbs (without Cable) Warranty 2 years Product Audio