I have a Charge HR. It doesn't buzz if I get emails & I have all other alarms turned off, except the one that lets me know I've hit my step goal for the day.

I like it because I can track my heart rate throughout the day, whether or not I'm walking--so when I'm doing a yoga class, for example, I can see how hard I was working. I have it synced with MyFitnessPal, and log onto the dashboard on my phone frequently to track water, exercise, sleep, etc.

So, it is for DH.
Focused on FitBit, not striiv or any other brands.

If I understand well, FitBit one is not for the wrist, right? which can probably make it more comfortable for him as he usually wears a watch.
And, do all of the fitbits buzz when you get emails, etc? Or just some of them? Which ones?
Can you turn that function off?

Thank you
I do know that I can find all that info online, but would appreciate if you'd give me some shortcuts here.