First of all I am fan of the Withings line. I am especially impressed with the completeness of health monitoring compared to others. That is why I have the complete line. Steel HR, Body Cardio, BPM core, thermo, sleep sensor. However I think blood measurements are missing in this line. Especially vitals such as blood sugar but also saturation levels, vitamin values, and immune system values such as several leukocytes. That is why I am requesting this new product in the line of Withings to make it more complete.