The Ember Mug2 is your personal barista. Enjoy your coffee or tea precisely how you like it, every time. Set your ideal temperature between 120 F and 145 F (50 C and 62.5 C) with easy controls on the mug or the Ember app. A smart LED light lets you know when your drink is just right. Stay powered up with up to 80 minutes of battery life when unplugged, or endless warmth when using the charging coaster. This durable mug is safe to hand wash and even withstands submersion in up to 1 meter of water. Perfect for home or office, the Ember Mug2 is the key to your perfect cup.