There are plenty of smartwatches with heart rate monitoring that have a week of battery life and 180mAh is enough for 10 days on some of them. It's obviously no

There are plenty of smartwatches with heart rate monitoring that have a week of battery life and 180mAh is enough for 10 days on some of them. It's obviously not enough if you're playing music or video or something like that. But if you're primarily using the device to give you notifications, heart rate, and the time, it seems likely it does last all week.