If you are ever flying over terrain that is not near populated areas, DeLorme's inReach Explorer is a piece of equipment that has the potential to save your life. This portable unit is connected to the Iridium satellite network, which means you can connect with emergency personnel, friends and family wherever you are in the world. Measuring 2.46 inches wide, 1.04 inches deep and 4.5 inches high (5.83 with the antenna) and weighing in at 6.7 ounces, the Explorer has a built-in GPS receiver. You can load a planned route into the portable unit and view it either on the screen itself or on an iOS device using the Earthmate app, which also allows you to get weather information and post to social media. The GPS location and tracking can also be shared with friends and family online through a feature called MapShare.