Here is an off-grid communication device that helps you stay connected in the outdoors. The Radacat Team Messenger C1 lets you take advantage of offline GPS anywhere. It also supports text and voice messages and real-time location tracking with other Team Messenger C1 users.
This tool is made for hiking, cycling, hunting, international travel, and emergencies. It has a mesh networking range of 4 miles or more in open environments. It also has a convenient shake to talk function.