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See Also Speaker/Receiver Unit Tester BK2120A Earbud Tester BK2132 8Ch Speaker/Receiver Unit Tester BK9012 Speaker/Receiver Coupler BP1090

Earbud Function Button Tester Type BK2121

Image: BK2121 Function Button Tester
The Apple Earbud Function Button Tester: The BaKo Type BK2121 was developed in response to Apple’s need to maintain quality control in earbuds which contain function controls and an internal microphone, designed to be used with newer IPods. It is a compact, easy to setup, easy to use machine with a short test time that you can use to functionally validate each earbud unit as it comes off the product line.

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