Use 5V2A charger, which can only heat cold water ... The Thermostatic Stirring Coffee Mug will auto shut off after continually working 24 hours. No worry about forgetting to turn it off.

When I walk into any coffee shop, I see at least a handful ... mouthful but not so wide open that it spills when I tilt the mug back. This is even the case with iced coffee; the cubes never ...