Garmin's Instinct Solar Tactical is a GPS smartwatch takes battery life to a new level by harnessing the power of the sun. Featuring battery life with solar charging- get up to 54 days in smartwatch, military standard toughness, built-in sports apps right on your wrist, notifications straight from your phone to your wrist, GPS, GLONASS and Galileo - your 3 best friends in the wild. Additional tactical features night vision compatibility- switch between daytime view and nighttime view with a screen designed to be read by night vision goggles, stealth mode- go dark by enabling stealth mode to stop storing and sharing your GPS position and disable wireless connectivity and communication, Dual-Postion format- sync your location with others by seeing both the universal transverse mercator (UTM) and the military grid reference system (MGRS) on the same screen. Compatible with iPhone and Android with multiple smart features including Find My Phone, Find My Watch, text response/reject phone call with text (Android only) and smart notifications. Activity tracking features including steps and calories burn, gym activity profiles, training and planning and running, cycling and swimming profiles.