Durable, constructed to military standards (MIL-STD-810G); night vision goggle compatible Works with GPS, GLONASS and galileo satellite systems to provide accurate positioning Know where you are with navigation sensors, including 3-axis Accelerometer, 3-axis compass and a Barometric altimeter; smart notifications¹ allow your Device to receive emails, texts and alerts Applied Ballistics elite software that calculates aiming Solutions for long-range shooting Battery life exceeds 48 hours in navigation mode, up to 1 week in UltraTrac mode and up to 1 month in watch mode