Battery Saver Mode is designed to extend your battery life by dimming the display and limiting device performance.
1) Method 1: Swipe down on the watch face screen and tap the Power Saving icon to enable/disable Power Saving mode.
2) Method 2: Go to the app list, tap Settings > Preferences > Battery saver mode, and tap the Power Saving Mode switch to enable/disable Battery saver mode.
3) Auto turn on/off
a. When your Watch battery goes down to 10%, a Low Power Mode alert asks if you want to turn the feature on.
b. Low Power Mode turns off automatically when your battery is charged to 90%.
Battery Saver Mode turns off these features:
1. Disable Wake On Wrist Raise
2. Sounds Muted
3. Halting background measurements of Heart Rate, Blood Oxygen, Stress, and Assisted Sleep Monitor…
4. Certain apps unavailable (e.g. Flashlight…)