With the Ember Travel Mug, you can select a preferred temperature for your hot beverage, and it'll maintain it so every sip of your black coffee is perfect. It holds 12 ounces, has a temperature range between 120° F and 145° F which you can control through the Ember app, and has a battery life of about two hours. If you're against the use of smart phones because you think it leaves you susceptible to information hacking and intrusions of privacy, not to worry! You can set the mug's temperature by simply rotating the bottom. This thing is pretty genius. Good job Clay Alexander. 

Get it HERE