Jabra Speak2 40 UC, Dark Grey. Device type: Universal, Product colour: Black, Cable length: 0.8 m. Frequency range: 100 - 20000 Hz, Impedance: 3 Ω. Microphone frequency: 150 - 7000 Hz. Connectivity technology: Wired, Interface: USB Type-C, USB connector type: USB Type-C. Power source type: USB