Control the temperatures of your tea or coffee with precision for an ideal drinking experience. USB-C cable to charge the mug. Heat your coffee/drinks any time and anywhere. Temperature from 0-65?(32-150F) can be adjusted freely to keep you drinks warm. Waterproof design. Battery working time(35?/90F): about 5 hours. Pick your preferred temperatures by using the touchscreen buttons, then take your coffee or tea on the go and enjoy it at any time.