H540 USB computer headset with high definition sound and on ear controls

Input Impedance: 20 Ohms

Sensitivity (headphone): 115 dB +/-3 dB

Sensitivity (microphone): -42 dBV/Pa +/- 3 dB

Frequency response (Headset): 20 Hz to 20 kHz

Frequency response (Microphone): 100 Hz to 16 kHz

Cable length: 1.8 m

Connections: USB-A compatible (1.1, 2.0, 3.0)