Press and hold the Mode key (the one with the T above it) for 3 seconds to enter settings mode. Then, use the “▼/B”or “▲/A” keys to change to the setting desired: 12-hours versus 24-hour, time of day, etc. Press Mode to confirm your choice.
If you don’t want to change the setting, simply press Mode and the TrekGuide will accept the setting and move on the the next field. The sequence of fields is as follows:
- 12/24 hour format
- Month/day sequence
- Temperature unit
- Air pressure unit
- Altitude unit
If you don’t press anything for 15 seconds, the TrekGuide display will exit the settings mode. If you press the Compass C button, the TrekGuide will exit the settings mode.