Designed to let you know when your beverage has reached the ideal temperature and more. Built-In Battery: Enjoy your drinks on the go with up to 1.5 hours of use for the 10 oz mug and 80 minutes for the 14 oz mug. Plus, it lasts all day when placed on its charging coaster. Auto Sleep Feature: This smart mug automatically detects when to power on and off, ensuring energy efficiency. Customizable Temperature Range: Set your preferred temperature between 120°F and 145°F (50°C - 62.5°C) using the Ember app for a perfectly tailored drinking experience.