Question: How long would this invention take to make?

Sanjeev Kumar answered on 10 Mar 2020:

In my research work, I have developed a wristwatch-integrated sensor device for wireless health monitoring of the patients in a hospital. I started working on this project in March 2018 and finished in Sept. 2019. So in total, it took me about 18 months to develop the final product and evaluate the wireless performance of the device in a hospital.