How To Turn Power Saving Mode Off On Apple Watch. Next drag the Power Reserve button from the left to right. Wait for your Apple Watch to restart.

To turn off Power Reserve mode on Apple Watch the watch needs to be rebooted. Turn off Your Apple Watch. Tap on Power Reserve to enable.
Turn it off turn it on in iWatch.
Tap the Power Saving Mode switch. Green means power saving mode is turned on. Hold and press the side button until the Apple logo appears. Tap the My Watch tab then tap Workout.
