I've been waiting for Dogtra to come out with a GPS unit but I'm really disappointed the Pathfinder works through your cell phone. I don't want to be fumbling with my cell phone and not being able to see the screen in sunlight. I think they would have been much better served to have used a separate handheld unit like Garmin and Sportdog. I don't need all the information that the Garmin gives you. I want it simple, more like the Sportdog TEK 1.0. Wish Sportdog would come out with a smaller unit for the dog like Garmin did with the Mini.