Send photos voice message and exchange texts with Garmin Messenger app - no cell service required. Interactive SOS - send message w/ GPS coordinates to Garmin Response in emergency. Share GPS location. Garmin Explore App - plan trip see your track on a map and more. Sync Your Contacts. On-Device Display. GPS Accuracy. Impact-resistant and water-rated to IPX7. Get weather reports. TrackBack Routing. Acts as a power bank to charge phone. Up to 25 days of battery life in 10 minute tracking mode. Dimensions: 3.1" x 2.5" x 0.9". Includes USB-C cable.