Fitbit watch

is the Fitbit watch permissible to wear on Shabbat? It’s a watch that tracks your activity, sleep, heart rate etc. If you move it the screen comes on. I also wear a watch so I don’t use it for time.

Sorry about the delay.

The Rabbi doesn’t permit wearing a fitbit on Shabbat.

Can we assume the same would be for a smart watch?
If someone forgot to remove his smart watch before Shabbos how should he proceed?

Correct. You can take it off just like if you would find money in your pocket you can shake it out into a drawer for example.