The Garmin inReach Messenger Plus Satellite Communicator is a check-in device for off-grid adventures. When you're headed beyond cell phone service, this little communicator keeps you linked up with your loved ones. Send a text, photo, or voice message to your family or besties. Even send an SOS message to Garmin Response, a 24/7 staffed center. Please note that an active inReach subscription is required.