At Kit Up! we recently had a reader asking about wrist worn GPS units, so here are a few of my thoughts on the subject, based on my previous experiences using the two models seen above during combat deployments to Iraq. I’ve used the Garmin Foretrex in New York City as well, and while it takes some time, it will eventually get reception despite the tall buildings interferring with the signal. Even out in the forest in NY, the Foretrex actually gets a stronger signal over in Iraq than it does when I go backpacking here in the United States.