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Casio CFX 200 and 20 battery replacement

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Casio CFX 200 Scientific Watch

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This the the Casio CFX 200 Scientific Calculator watch. Recognised as the Uber geek watch. Feel free to look it up anywhere on the web. Nobody has a guide or any repair parts that I can find- and I looked really hard for one.

This is the first guide for how to open the back and replace the battery.

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