Real battery-saving mode to be roll out on the new Apple's WatchOS 9.

The power-saving mode alerts the user at reaching 10% charge, and turns off automatically at 80%.

Features such as heart rate monitoring, AoD, blood oxygen, etc will be turned off during power-saving mode.

WiFi and cellular connection will turn off when no iPhone is connected to the smartwatch.

Screen navigation and performance of the smartwatch may be reduced during power-saving mode.

Within iPhone's range, the watch will postpone notifications that will be delivered every hour.

Workout reminders will be automatically turned off during power saving mode.

The power-saving mode can be controlled manually through control center.

Data connection will be re-enabled for apps that requires internet connectivity.

This latest feature will help users having an extended battery life of the WatchOS9 smartwatch.