Polar Questions/Help

Hello, I am currently using the Striiv Play but am considering a Polar watch. I realize one measures steps (primarily) and the other heart rate (primarily). I'm wondering if anyone has a Polar like the FT7 that they wear throughout the daytime, whether exercising or not. I'm wondering if this is a viable option to not only get the benefits of a HRM when exercising but also to have the most accurate caloric burn data. Thanks for any perspective.

Michael