Any Garmin GPS receivers for street navigation will do (Garmin Nuvi 710 will do fine). It's what loaded map that matters. Be sure to have the latest map. (for Qatar: City Navigator Middle East NT 2010). You won't have turn by turn voice instuction in the desert (as there are no streets there) but you can see your position and save you tracts for later use (also can be downloaded to Google Earth).
Any Garmin GPS receivers for street navigation will do (Garmin Nuvi 710 will do fine). It's what loaded map that matters. Be sure to have the latest map. (for Qatar: City Navigator Middle East NT 2010). You won't have turn by turn voice instuction in the desert (as there are no streets there) but you can see your position and save you tracts for later use (also can be downloaded to Google Earth).