ICIDU Foldable USB Headset With Microphone & Volume Control. Device connectivity: Wired, Device interface: 2x 3.5 mm, Wireless range: 3 m. Headphone frequency: 20 - 20000 Hz, Impedance: 32 Ом, Headphone sensitivity: 11 dB. Microphone frequency: 20 - 20000 Hz. Packaging height: 242 mm, Packaging length: 91 mm, Packaging width: 98 mm