GPS Navigation Device

A GPS navigation device is any device that receives Global Positioning System (GPS) signals for the purpose of determining the device’s current location on Earth. GPS devices provide latitude and longitude information, and some may also calculate altitude, although this is not considered sufficiently accurate or continuously available enough to rely on exclusively to pilot aircraft. GPS devices are used in military, aviation and consumer product applications.
GPS devices may also have additional capabilities such as containing all types of maps, like streets maps, which may be displayed in human readable format via text or in a graphical format, providing suggested directions to a human in charge of a vehicle or vessel via text or speech, providing information on nearby amenities such as restaurants, fueling stations, etc.