Garmin InReach Explorer+. GPS with preloaded topo maps and satellite communication. Send a receive messages in the backcountry. We’ve used it a lot backpacking, running rivers, hunting, and backcountry skiing. The full sized version has  twice as much battery as the mini and can operate independently from your phone, making it ideal for longer excursions.  See link below for full specs. Will ship for a full price offer.