The Garmin gmr 18 xhd is a 4Kw high-definition 18 inch dome radar that pairs ease of use with advanced open-array features. The gmr 18 xhd features 48 or 24 RPM rotation speeds for fast screen refreshes, auto adjusts as needed based on range and a 48 mile max range setting as well as advanced signal processing and dynamic gain/Sea filter for improved performance, dual range, and true color.
Make sure this fits by entering your model number.
48 or 24 rpm rotation speeds
48 mile max range setting