Headset Logitech H111, Mic, 2 x mini-jack 3.5mm P/N 981-000593 Height: 160 mm (6.3 in) Width: 210 mm (8.3 in) Depth: 50 mm (2.0 in) Weight: 73.2 g (2.6 oz) Input Impedance: 32 Ohms Sensitivity (headphone): 100dB +/-3dB Sensitivity (microphone): -58 dBV/µBar, -38 dBV/Pa +/- 4 dB Frequency response (Headset): 20Hz to 20kHz Frequency response (Microphone): 100 Hz –16,000 Hz Cord length: 1.8 m (5.90 ft)