SOS Satellite Communicator with Photo & Voice Messaging SAY IT. SHOW IT. SHARE IT. Tell them you miss them. Show them the view. Share the experience. With an active inReach subscription, the trailblazing inReach Messenger Plus SOS satellite communicator1 lets you exchange text, photo and voice messages2 when your adventure takes you beyond cellular range. Plus, the durable design withstands extreme temperatures, and the battery lasts for weeks.