Designed to be used on-the-go, Ember Travel Mug2 does more than simply keep your coffee hot. The smart heated travel mug allows you to set your preferred drinking temperature, so you can enjoy your hot drink—just the way you like it— from the first sip to the last drop. Ember Travel Mug2’s built-in battery maintains your chosen drinking temperature for up to 3 hours, or all day with the included charging coaster. Features: 12 fl. oz capacity, built-in battery, 3 hours battery life, or all day on included charging coaster, Ember Travel Mug Charging Coaster2 , pairs with the Ember app. (iOS and Android compatible), 120 – 145°F / 48 – 63°C temperature range, hand wash safe design, submersible in water up to 1m, apple ‘Find My’ compatible, do not microwave.