About this item 
    
   
 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  
  
 Battery life exceeds 48 hours in navigation mode, up to 1 week in UltraTrac mode and up to 1 month in watch mode  
  
 NOTE:Kindly refer to the user manual provided as a PDF manual in the product description sectio