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.

Starbucks has a new way to keep your latte hot! They will soon begin carrying the Ember smart mug, an intelligent tumbler that can keep your beverage at a user-determined temperature. Follow Tech ...

Before these smart devices ... the liquid to stay at the set temperature. Stainless mugs tend to be insulated, and their combination of material and design effectively slows heat loss.