Garmin 010-11417-10 SteadyCast Heading Sensor

Dimensions: 3-2/5" length x 2-1/10" width x 1-3/10" height (86-3/10 length x 52-9/10 width x 33-7/10 height mm) Default Heading Output: 10 Hz Output heading with +/-3 degree accuracy Water Rating: IPX7; LEN: 2 Operating Voltage: 9 VDC to 32 VDC