GSCOUTGPS : How do I set auto-switch off?

To set the GSCOUTGPS to automatically power off after you have left the car: 

1. Turn the GSCOUTGPS on and press the MENU button on the side of the device. 
2. Use the ▼ or ▲ buttons to scroll along to General Settings and then OK to access.
3. Press the ▼ or ▲ buttons to scroll through to the Power off function and press OK to enter.
4. Press the ▼ or ▲ buttons to select the desired option (1 min - 5 min or X to cancel) and then press the OK button to confirm.