Introducing the Ember Mug2: Your drink, your temperature, your way. Enjoy your coffee or tea precisely how you like it, every time. Set your perfect temperature between 120 F and 145 F (50 C and 62.5 C) directly on the mug or with the Ember app. A smart LED light lets you know when your drink is ready. With a 1.5-hour battery life, the Ember Mug2 keeps your beverage warm for extended periods, even longer when on its charging coaster. Designed for both home and office, this mug is durable, water-resistant up to 1 meter, and easy to clean.