If you’re on an adventure, you can use the Garmin Nuvi 200 series model go geocaching, the treasure hunt gadget era using a GPS device. This Garmin can be a car model, but its features allow it to be used for the game, too. It is lightweight, portable, battery powered and has an off road mode that will help you find your treasure. The Garmin Nuvi 200 series is not meant to be a full-time geocaching device, because its battery…