Under normal operating conditions, the device will use both GPS and cell phone technology to track your vessel, giving you a precise location anytime, anywhere. In the unlikely event that you are in an area that is not covered by any cell carrier and that extreme weather conditions exist, the device may, for a short period of time, be unable to provide an accurate location. Unlike our competitors, our device uses both GPS and cell phone technology to locate the boat. In extreme weather conditions, there will be times when our competitor’s device is completely hidden from GPS satellites. Dense foliage, urban environments, canyons, underground garages and indoors will render many of our competitor’s device completely useless.