The Garmin GPSMAP 66i is a multi-activity handheld GPS device and satellite communicator. With the ability to trigger an interactive SOS to GEOS, send and receive two-way messaging and track live locations via the 100% global Iridium satellite network (satellite subscription needed for these features). Confidently navigate with preloaded TopoActive European mapping, direct-to-device BirdsEye Satellite imagery downloads, multi-GNSS support and navigation sensors no matter the outdoor activity. It includes altimeter, barometer and compass sensors. The altimeter provides elevation data to accurately monitor ascent and descent, while the barometer can be used to predict weather changes by showing short-term trends in air pressure. The three-axis electronic compass shows an accurate bearing whether you're moving or not. You can also link it to a Bluetooth® compatible smartphone to receive Active Weather updates for real-time forecast information, including predictive maps for temperature, wind, precipitation and cloud - a phone data connection is required. The GPSMAP 66i series offers up to 35 hours of battery life in GPS standard mode and 200 hours in expedition mode. It provides an LED flashlight and SOS beacon that can be used to signal for help. It's built to military standards for thermal, shock and water performance (MIL-STD-810G) and it’s even compatible with night vision goggles. It includes access to the Garmin Explore mobile app to review and sync data, including waypoints, routes and tracks. You can also import GPX route files created from other mapping applications, such as OS Maps. Includes Garmin GPSMAP 66i with topographic maps Birdseye satellite imagery access code USB cable Carabiner clip Documentation GPS 66i handheld requires an active airtime subscription to use Iridium satellite communication features and must be activated at explore.Garmin.com.