No transducer is necessary, it is equipped with 32-channel GPS antenna. – Type 1: Speedometer/compass: 0-45 knot speed analogic indication and compass course digital indication (degree by degree). – Type 2: Speedometer/totalizer/compass: speed digital indication 0-999 knots, Km/h or MPH, distance covered up to 99999 miles and compass course (degree by degree). 27.780.02 VariantBlack dial, black bezel VersionType 1 V12 mm – A96 mm – B85 mm – C55 27.781.02 VariantBlack dial, black bezel VersionType 2 V12/24 mm – A96 mm – B85 mm – C55 27.780.03 VariantBlack dial, glossy bezel VersionType 1 V12 mm – A96 mm – B85 mm – C55 27.781.03 VariantBlack dial, glossy bezel VersionType 2 V12/24 mm – A96 mm – B85 mm – C55 27.780.01 VariantWhite dial, glossy bezel VersionType 1 V12 mm – A96 mm – B85 mm – C55 27.781.01 VariantWhite dial, glossy bezel VersionType 2 V12/24 mm – A96 mm – B85 mm – C55
