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The Pixel Watch 4 has a secret weapon you won't find on many other smartwatches

You can replace the battery and the display yourself.

(Image credit: Andrew Myrick / Android Central)Maybe you're not the kind of person who feels confident enough to tear open the back of your$350 smartwatch. The flip side is that some products are just chock full of glue and adhesive gaskets that you can't buy but must be replaced if any repair work is done. Fewer smartwatches end up in landfills as e-waste, less lithium and cobalt need to be mined, and you get to save money.

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