Already we have discussed about compact and portable Cooler for you beverages. In such a way, this new one has come out with more features than earlier make. The name of the concept is Gradient, which is an ultra-portable electrically powered concept device. It has the ability to maintain a steady temperature of a cup of tea or coffee. This is lightweight and easy to use with the given buttons placed on the case and we can easily monitor the temperature on the highlighted LED display.
Click to know about USB fridge
The lower case of the device is mainly used for heating to keep the cup warm and when it comes about keeping your beverages chill, the upper impeller will start working.