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SIERRA Premier Pro Series GPS Speedometer provides accurate speed over ground readings and heading information all in one attractive package. Includes LCD heading display to show course over ground. Use a GPS antenna (sold separately) or connect to an existing NMEA 0183 GPS device with the included connectors.
- Speed accuracy of +/- 1 mph (once moving)
- Heading accuracy of +/- 1 degree (once moving)
- Ideal for slow speed applications like pontoon boats and high speed performance boats where pitot tubes do not perform well
- Gauge range: 0-80 mph