Amazon has cut Ember smart mug prices to record lows for Black Friday. The high-tech mugs have built-in heating that can keep your coffee, tea or other hot drink at your ideal preset temperature, allowing you to take your time sipping it without worrying about a lukewarm beverage. Usually $130, you can pick up the 10 oz Ember Smart Mug 2 starting at $90.
One of Engadget’s recommended gifts for teachers, the Ember Smart Mug 2 can keep your mug heated to anywhere between 120
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