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Bottom Line: The Ember Mug 2 helped define what to expect from a smart heated mug and offers unmatched control and customizability. Pros: Second generation of original rechargeable heated coffee mug.

I love a well-made insulated mug that keeps my coffee hot all day, even on bitter-cold ski days. But I was curious: how would one of the top-end mugs I’ve reviewed in the past stack up against the ...