The gWind transducer features twin-fin technology with 3-bladed propeller for more accurate TWS in lighter air while the twin-fin design gives a more stable TWA. The 3-bladed propeller, unlike a cups design, is always efficient. Combined with optic reading this transducer provides superior accuracy at low wind speeds and also provides for excellent linearity. The included GND 10 black box bridge enables the Nexus Network and compatible Garmin chartplotters to share critical NMEA 2000 data. The GND 10 enables Garmin chartplotter owners to use Nexus sail equipment and vice versa. In The Box gWind transducer, GND 10, NMEA 2000 drop cable (2 m), NMEA 2000 T-connector, Mast cable with female connector (25 m), Nexus network cable (5 m; straight connector), Nexus female field installable connector, Mast bracket, Mounting hardware, Documentation.