Range of frequencies: 20 Hz to 20 kHz Diameter/driving coil: ø50mm 2.2mm cable Sensitivity rating: 103dB ± 3dB 32Ω ±15% impedance 50mm is the speaker's diameter. Interface: USB Load + 3.5mm Jack 2.2kΩ of impedance 30mW is the maximum power. ≤100mA of current The DC5V voltage Categories: Headsets, Accessories & Supplies Headset tag