Ember Temperature Control Smart Mug 2 sells on Amazon. I think the price is very good. Please read some of the reviews and see people thought of the product.**If you’re not sure whether to buy, add to cart, and you can come back to it later!**

Perfect Temperature Everytime: Ember Mug 2 offers up to 90 minutes of heat (120F to 145F) or all-day warmth on its charging coaster. Ideal for keeping drinks at the perfect temperature, perfect for desk use or as a thoughtful gift.

Smart or Standalone: Use the Ember app to set precise temperatures and get notifications. Without the app, the mug defaults to 135F and remembers the last setting for a consistent experience.