Galaxy Watch : How to set the power saving mode ?
You can activate power saving mode to extend the battery’s usage time. After enabling power saving mode it will make below mentioned changes to save battery time.
• Displays colors on the screen as grey tones.
• Disables all features except the notifications from apps that do not need a mobile network connection. However, phone, messaging, and notifications are available when the Galaxy Watch is connected to a mobile device via Bluetooth.
• Deactivates the Wi-Fi network.
• Limits the performance of the Galaxy Watch’s CPU.