Really like a Duracell battery, the fun mug can tell you the approx temperature of the coffee through the interactive pattern. Your co-workers must get a big surprise when you show the black mug.
As the title said, the mug has integrated a temperature sensor. Once you pour a drink up to 36 centigrade, the battery life panel will appear on the surface of the mug. So if you want the amusing pattern always to be shown on the mug, you must keep a high temperature of your drink. Perhaps it’s more fit for using in winter.
The battery life mug is priced at about $28 USD. If you need, you can get it from Artlebedev. The mug must be a great gift for your geek friends.
By the way, you also could check some amusing mugs such as pac-man mug, switch mug, and etc.
Battery Life Mug Integrated Temperature Sensor Source