It is awkhard to drink water from a vacuum cup.always we only can use mouth to try the temperature.sometimes the temperature is too high so we only have to wait till the water cool down.So we decide to develop a new smart vacuum cup to solve this issue.at least can display the temperature directly and better keep warm and cold.Be a better vacuum cup with new high smart technology.after many times demonstarting ,researching,expering,the fantasy cup G1/G2 just coming out.It can support the implement real time temperature and app reminding drinking.And also we just fusion of the BT cloud technology,can make it according your data of drinking and the weather to advise the healthy drink content.