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.
The Ember Mug 2 hides heaters in a stainless steel body to keep your drinks uniformly warm at any temperature you want — so long as that temperature is between 125 degrees to 145 degrees Fahrenheit.
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