Faria Beede Instruments Chesepeake Black SS 4" Studded Speedometer - 60MPH GPS. GPS information is gathered from an internal GPS antenna. No external antenna required. The Faria GPS Speedometer uses a highly accurate 48 channel GPS receiver. You can be sure that the Faria GPS Speedometer is giving you the most accurate GPS information available on the market today. Course Over Ground (COG) and actual heading (compass heading over ground) are displayed on the optional digital LCD. Speed data is shown by an analog pointer. This pointer is driven by a digital stepper motor for increased accuracy and minimized pointer bounce during vessel operation.Benefits:No external GPS antenna required Premium LED back-lit dials Ultra fast Satellite acquisition time (TTFF) 1 second from Hot start Speed Accuracy of +/- 1 MPH Heading Accuracy of +/- 1 Degree Digital stepper motor driven pointers Ideal replacement for speed sensing devices (pitot tube and paddle wheel) that fail over time Perfect for slow moving vessels where pitot tubes just don't work Deutsch connectors Specifications for Faria Beede Instruments Chesepeake Black SS 4" Studded Speedometer: Manufacturer: Faria Beede Instruments Color: Black Features of Faria Beede Instruments Chesepeake Black SS 4" Studded Speedometer Rugged reliable construction Wide range of speeds Color: Black Designed for quick and simple installation Without LCD Package Contents: Faria Beede Instruments Chesepeake Black SS 4" Studded Speedometer Faria Beede Instruments 33749: Chesepeake Black SS 4" Studded Speedometer - 60MPH GPS