Sandberg 2in1 Office Headset Jack USB

Sandberg 2in1 Office Headset Jack USB - Headset cable length: 1.5 metres, Headset connector: 1 x 3.5 mm MiniJack male plug, 4 pole USB controller cable length: 1.5 metres, USB controller connectors: 1 x MiniJack 4-pole female, 1 x USB-A male Earphone: Driver unit: 27 mm, Frequency range: 20 Hz 20 kHz, Impedance: 32 Ohm Microphone: Type: 6mm dia. electret condenser microphone 3V, Direction: Omni-directional, Frequency Response: 30 Hz - 20 kHz, Impedance: 2.2 kOhm, Sensitivity: -42dB 3dB