Meet the Ember Mug 2: the next generation app controlled coffee mug that can keep your drink hot 1.5 hours on a single charge. It has an adjustable temperature range of 120F-145F. You can pair it to the Ember app to set your temperature and customize presets.
The mug is smart enough to detect when it is empty to enter sleep mode. It is IPX7 rated and fully submersible up to 1 meter deep.