The perfect temperature with every sip. The mug you know and love is now even better. Mug 3 keeps your drink precisely at your preferred temperature and is easier than ever to use. Set the temperature in directly on the mug, then enjoy every sip at the perfect temperature throughout your day. Select your temperature range as 120°F - 145°F (50°C - 62.5 °C). Built-in Auto-Sleep function intelligently senses when to turn on and off. When you’re done, simply place it in the dishwasher for effortless cleaning. Each mug also includes a sipping lid that helps extend battery life, keeping your drink warm for over two hours on a single charge. Compatible for Apple devices operating system: iOS 12.0 and above and Android devices operating system: 8 and above. Once your Mug has an empty battery, place the mug on the charging coaster for approximately 2 hours for a full charge.