Garmin Xdcr Low/High Wide Band 3KW External New Condition 010-12187-20. Airmar R509 urethane external mount. For use with GSD 25 and GSD 26 sounder modules. Features of Garmin Xdcr Low/High Wide Band 3KW External: 2 to 3 kilowatts power Depth of 10 000...