Smart Rechargeable Coffee Mug with Temperature Control
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This is a battery-powered travel tumbler that heats your drink itself, holding it within one degree Fahrenheit of a temperature you set on the base or in a phone app. A lithium core runs the heater for about three hours, and a double-walled vacuum body with a sealed polymer layer keeps the outside cool enough to grip. It suits commuters, desk workers and road-trippers who sip slowly and dislike reheated coffee. Against passive vacuum flasks, which hold heat but cannot add it, it trades simplicity and weight for active control; against plug-in heated coasters, it works away from a desk.
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Lowest price we've seen: $205.95 on Nov 8 at VXB.com Bearings. Tracked across 1 store since Nov 8.
This is a rechargeable smart coffee mug that keeps a drink at a set temperature. It has a steel build with a double-walled vacuum core and a sealed polymer shield. A micro heating plate is fused to the core, and an internal thermistor tracks the liquid temperature and switches the heating coil on when the drink drops below the preset.
Temperature accuracy is within one degree Fahrenheit. You can change the temperature by tapping the bottom panel or by using the phone app. The high-capacity lithium battery heats for over three hours, with a 180-minute runtime.
The shell has an IPX7 waterproof seal and is fully submersible, so it tolerates dunks and quick rinses. A textured exterior coating guards against scratches and bag abrasions. A sealed contact strip connects to the charging saucer. To clean it, rinse the inner tube with tap water and wipe the base dry.