For an alternative, you may consider buying a Mr.Coffee mug warmer for $11.99. While it lacks the smarts of the Ember and you can’t set a specific heating temperature, the mug warmer gets the job done if you’re just wanting to reheat your coffee, tea, or hot chocolate.
Beneath the surface, the Ember Smart Mug 2 is more than just a cup that warms up your drinks. Through the Ember companion app (available on iOS and Android), you can manually adjust the temperature of your beverage to the T. This is particularly useful if you prefer your coffee at a certain temperature – not too hot, not too cold. The mug is also rated for IPX7, meaning it’s washable and can be submerged up to one meter deep. In terms of battery life, you can expect the mug to last up to 1.5 hours per charge or all day when placed on the included charging coaster. This deal covers the 10-ounce white model and expires at midnight, so you better act fast if smart home tech like this is your cup of tea.  Interested in more tech deals and reviews? Subscribe to the ZDNet Recommends newsletter and let our expert reviewers scour the internet for only the top products, services, and deals for you.