The innovative Ember Mug2 does more than keep your beverage hot. The temperature-controlled smart mug allows you to set a temperature of your choice and hold it from the first sip to the last drop—great for coffee and tea lovers. A single charge keeps contents hot for an hour, or you can keep things hot all day with the mug placed on the included charging coaster. It's great for on the go or at the desk. Temperature can be adjusted between 120°F and 145°F, which you can even set from the smartphone thanks to the Ember Mug companion app that also lets you customize presets, change the LED color, track your caffeine consumption and much more.