Designed to provide NMEA0183 heading input into any navigational instrument Made in the USA by KVH Industries, the leading supplier of electronic compass systems to all branches of the U.S. Armed Forces Built to military quality standards using all the latest technology Stable, large, easy-to-read LCD Choose from 10 dampening levels Totally waterproof with Solid state Fluxgate sensor Continuous auto compensation for accuracy 8 push-button course indicator changes the display from compass rose to steering indicator Only a 1/2” hole needed as it is a flushmount application and rests on the dash Self contained for simple installation