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Amazon.com: Unify (Siemens) OpenScape Desk Phone Compatible Call Center Headset with Noise Canceling Microphone, Tangle-Less Bottom Quick Disconnect Cord | Flexible & Rotatable Microphone Boom | Durable : Electronics
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Amazon.com: Unify (Siemens) OpenScape Desk Phone Compatible Call Center Headset with Noise Canceling Microphone, Tangle-Less Bottom Quick Disconnect Cord | Flexible & Rotatable Microphone Boom | Durable : Electronics
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Left: standard pneumatic headphone (Siemens), right: earphones (3M)... | Download Scientific Diagram
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