In this video, I’ll show you how to set an alarm on the Garmin eTrex 20.
The alarm function will allow you to set a time when you want the device to turn on.
From the Main Menu
1. Select ALARM CLOCK.
2. Set the time then press DONE.
3. Turn Alarm On/Off.
4. Select to turn off the device NOW or LATER.
Once the internal clock reaches the specified time, it will turn ON and the alarm tone will chirp, where you can either snooze or turn off.