Hello!
Can you please add an option for the recalibration after the treadmill running? After the first calibration, the watch does not have option for recalibration.
The watch won't prompt you to calibrate after calibrating for the first time. You'll need to scroll down after you stop the activity and look for Calibrate & Save. To see that option, the watch will need to record a distance of at least 1.5 km (1 mi.).