Meet the ZOLEO Satellite Communicator: an Iridium based 2-way communication device that keeps you connected outdoors. It extends your messaging coverage all over the world. It has a SOS feature that lets you get help when you are stuck. You can also check-in with your contacts.
The device has a rugged design. It lasts over 200 hours on battery. It is designed to work in -4 to 131F temperatures. With Gaia GPS membership, you will be able to access all kinds of maps and use them off-line. Yon can find out more about it here.