There are some people that they forget by keeping tea, and when they remember their tea, they become cool till then. And some people do not enjoy as long as their tea is not warm until the end.
“Ember” makes have an interesting Tea Mug Which are also the charger and its Mug and also you can control with mobile application - Its advantage is to put tea in it Mug. Through the application, you can keep tea slightly or too hot by means of self-meaning that your tea will be hot for the first time from the first lip.
You can buy in $80 from this link: Ember.com
Picture Credit: Ember.com