VDO 3-38 85mm OceanLink GPS Speedometer 0-35 - Black Dial Bezel OceanLink NMEA 2000 Certified 0-35 knmphkmh GPS Speedometer. Features integrated GPS chip and requires no external antennae. Features black dial and black bezel. OceanLink Technical Information 1x connector NMEA 2000 Reverse polarity protection Front rear side protection rating IPX5 Operating temperature range -20 C 70 C WARNING This product can expose you to chemicals including LEAD which is known to the State of California to ca