Heat delicate materials on the mug floor turns shade when scorching liquid is poured in
Pour in a scorching tea or a scorching espresso or scorching milk and when the WiFi emblem turns blue, you are able to surf
After cooling, the sample returns to regular
The mug is ceramic, sturdy
Hot spot is 300ml mug adorned with heat-sensitive color-changing ink that the sample will change as soon as it warms,which the liquid’s temperature as much as over 70℃