ST60 plus Speed features include: Current, maximum and average speed displays. Speed performance from 0 to 60 knots. Log range from 0 to 99,999 nautical miles. Trip range from 0 to 999 nautical miles. Temperature range from minus 10 degree celsius to plus 40 degree celsius. User selectable Pop Up Pilot display reports changes to connected Sea Talk autopilot mode or course settings. Speed Over Ground SOG display when interfaced with Sea Talk compatible GPS. Velocity Made Good display when interfaced with Sea Talk compatible wind instrument. Adjustable display response. Extra large digits with high contrast and wide viewing angle. Manual or automatic calibration from GPS speed over ground SOG. Standard surface mount kit included, optional flush or bracket mounts available. Intuitive 4 button control layout. Expandable Sea Talk networking technology enables connection to Ray marine autopilots, multifunction displays, radars, chart plotters and fish finders. Compatible with the wireless Smart Controller autopilot control and instrument repeater.