Don't understand your question? Is it the clock face you want to turn off? The tracking or display? Do you want to unpair it?
I don't think there is a way to "turn off" the Versa,2 or any of the Fitbit devices for that matter. They turn off when their battery charge is done. If you got a new/different fitbit and want to switch devices, you have to unpair the old one, then you can pair the new device. If you have a family account, then you can have two or more devices active in your account.
