The ZeFit4/4HR has an advertised maximum battery life of 5 days. The standby time and battery life of the device varies depending on your settings and charge/discharge cycling.
There are many factors that could cause the device to report less than the advertised battery life.
There are specific Activity and System settings that can be adjusted to maximize the battery life on your device:
- Disabling Reminders
- Disabling Wrist flick mode
- Disabling Bluetooth
- Lowering the backlight
- Disabling Vibration Alerts
- Disabling notifications
- Charge the device fully