Driver Unit: 40 mm Frequency: 20 Hz – 20,000Hz Impedance: 32 Ω ±15% Sensitivity: 108dB ±2dB Max Input power: 100mW Plug: 3.5mm Heaphone Connector Type: Condenser Unit: 6x5 mm Frequency: 50 ~ 1600Hz Impedance: 2.2K Ω Sensitivity: 42dB ± 2dB Plug: 3.5mm Microphone Connector