How Long Does the Ring Last?

It charges by wireless charging. It's pretty quick to charge and the battery life is probably like three days or something like that. You don't have to wear it all the time. So I know people who just wear it at night and not during the day. Like so your ring size during the day would not be the same as your ring size at night. This is primarily for sleep and you do not want to be waking up in the middle of the night going, Oh my God, my finger is getting circulation cut off because I got the wrong size.