You feel sometimes like you are not fully charged and see all in black until you have that first cup of cofee or favorite tea? This heat-changing battery mug shows that perfectly. It displays a empty battery when your cup is cold, and a fully charged battery when it’s full of the good and hot stuff 😉
Features:
- color changing battery mug – black and with uncharged battery when cold
- ready to act and fulyl charged when hot
- hand wash only, don’t use in microwave