A compass and an analog watch, preferably an automatic / mechanical. (Wind up). Preferably a dive watch, at least 100 meters if not 200 meters. You can use an analog watch as a basic compass.
As long as you know the cardinal directions, you can orient yourself and travel relatively well.
An analog is required as you need the hands to line up with the sun, and an automatic / mechanical versus a battery operated quartz watch is best as the battery may stop, or in the event of some EMP or solar activity, the automatic/mechanical will still be working. You must have the correct time.