EHG is correct. The 64ST as a GPS unit is ready to go out of the box for general mapping use. The OnX chips have a map with public/private land boundaries, which is really useful depending on where you hunt. The Web subscription is a great for "pre scouting" basically allowing you to view everything on your desktop computer. I got a free trial of the desktop version and while nice, did not end up keeping it when it expired. The chips are worth every penny IMO.
