25% under what the other stores charge
Compared across 9 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
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The Ember Mug is a battery-powered ceramic mug that holds a drink at a set temperature, controlled from a phone app or a button on the mug. It comes in 10 oz and 14 oz sizes, and the 14 oz version is rated for about 80 minutes on battery, or all day on its charging coaster. It is hand wash only and not microwave safe. At $89.99 at eBay as of November 8, 2026, it sits near the low end of its recent range across 9 stores.
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Lowest price we've seen: $89.99 on Nov 8 at eBay. Tracked across 9 stores since Nov 8.
Owners like the mug for keeping coffee at a steady temperature through long meetings and slow mornings. Common complaints are short battery life away from the coaster and the hand-wash-only care.
