Sandberg 326-15 MiniJack Headset Saver

 Cable length: 1.8 metres Connector: 1 x 3.5 mm MiniJack plug, 4 pole Converter for PC: 3.5 mm female 4 pole MiniJack to 2 x 3.5 mm male 3 pole MiniJack   Earphone: Driver unit: 40 mm Frequency range: 20 Hz – 20 kHz Impedance: 32 Ohm Sensitivity: 100 dB ± 3 dB   Microphone: Direction: Uni-directional Frequency Response: 30 Hz - 16 kHz Impedance: 2.2 k Ohm Sensitivity: -58 dB ± 3 dB   Dimensions Product (Package) Height 16 cm Width 14 cm Depth 4 cm Weight 140 g