Meet the Ember Mug 2.0: an app controlled smart mug that keeps your drink at the right temperature. It lasts up to 1.5 hours on a single charge and supports a temperature range of 120 to 145F. You can use the companion app to to set the temperature and customize presets.
Ember Mug 2 is IPX7 rated and fully submersible to 1 meter deep. It is smart enough to enter sleep mode when it is empty. The bad news? Something like this doesn’t come cheap.