With this intelligent mug, you can set an exact drinking temperature, ensuring your coffee is never too hot or too cold. The Ember Mug² maintains your chosen temperature for 1.5 hours, keeping your hot beverage well-preserved. The mug is easy to clean, safe for hand washing, and can be submerged in water up to 1 meter. It features a built-in battery to maintain your drinking temperature and comes with a new, redesigned charging coaster.