Sandberg (125-66) Speak and Go Earset, 10mm Driver, 3.5mm Jack, Inline Microphone, Black, 5 Year Warranty   Cable length: 1.2 metres Connector: 3.5 mm MiniJack plug, 4 pole   Earphone: Driver unit: 10 mm Frequency range: 20 Hz – 20 kHz Impedance: 23 Ohm   Microphone: Type: Omni-directional condenser Handsfree …

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