With the Ember Ceramic Smart Mug your coffee or tea always stays at the right temperature. Connect the mug to your smartphone and set the ideal drinking temperature via the app. You save different settings per drink, so you don't have to set the temperature manually. In the Ember app you also see how much caffeine you have and you also set the color of the LED light on the Ember mug. This smart mug keeps your drink at the right temperature with the battery for 1 hour. If you place it on the charging tray, your hot drink will remain hot indefinitely.