Gather ’round, card-carrying coffee connoisseurs! There’s a self-warming mug I’d be right selfish not to alert you about. Not only are reviewers saying it’s better than the slightly higher-priced ...

An curved arrow pointing right. Rejoice, coffee lovers. This high-tech Ember coffee mug claims it will keep your drink at the perfect temperature — down to the very last degree. Here's how it works.

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An curved arrow pointing right. Rejoice, coffee lovers. This high-tech Ember coffee mug claims it will keep your drink at the perfect temperature — down to the very last degree. Here's how it works.