Keep Coffee Warmer ... Use 5V3A charger, plug the mug in and it can be heated and insulated the entire time, and can heat cold water up to 140℉ and keep drinks warm. The heating time takes ...

Bottom Line: The Ember Mug 2 helped define ... loves a big-sized coffee or hot drink. All controls are onboard, so no smartphone or app needed. Offers three heat settings up to 150 degrees plus ...