Battery life
I have the 5 series and lately the battery drains faster. Why is that.
How old is the watch?
If on the watch you go to Settings>Battery>Battery Health what if maximum capacity listed?
If short battery life you can reset the the watch and that helps sometimes;
- Depress and hold the crown and side button until the Apple logo appears. Nothing is lost
Next would be to unpair the watch and re setup the watch. Sometimes setting up as new works better than restoring from backup
