Ember Temperature Control Smart Mug, 14 oz, 1-hr Battery Life, Black – App Controlled Heated Coffee Mug

Amazon.com Price: $248.00 (as of 03/08/2020 03:31 PST- Details)

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Keeps your hot drink at the exact temperature you prefer (between 120°F – 145°F). Start with 135°F and adjust up or down.
1 hour battery life on a single charge. Or keep the Ember Mug on the included charging coaster for all day use.