Product comparisons GPS 126 GPS 128 GPS 152 Receiver 12 channel 12 channel 12 channel Number of Waypoints 500 500 500 Built in Memory This Feature is not applicable to this Product This Feature is not applicable to this Product 1 MB # of Routes / # of waypoints per route 20/30 20/30 20/30 Database or Basemap N/A N/A Marine Point Database Additional map options N/A N/A MapSource Points of Interest CD Display Size 3.6 x 2.5 3.6 x 2.5 2.3 x 3.5 Display type Black and white LCD Black and white LCD 4 level Gray LCD Pixels (H x W) 102 x 65 102 x 65 100 x 160 Standard GPS Antenna Built in Remote Built in OR Remote TracBack Mode Yes Yes Yes # of Tracklog Points 1024 1024 2048 Unit Weight 1 lb. 1 lb. 1 lb. Audible Alarms Anchor: Yes Arrival: Yes Clock: No Off Course: Yes Anchor: Yes Arrival: Yes Clock: No Off Course: Yes Anchor: Yes Arrival: Yes Clock: Yes Off Course: Yes Waterproof Standard IPX7 IPX7 IPX7 Unit Size (H x W x D) 4.9 x 5.3 x 2.4 4.9 x 5.3 x 2.4 4.9 x 5.0 x 2.5 Backlit Display 3 levels 3 levels Multi-level adjustable Internal Differential N/A N/A N/A WAAS capability This Feature is not applicable to this Product This Feature is not applicable to this Product Yes Loran TD position format Yes Yes Yes MGRS position format Yes Yes Yes Celestial Information Page This Feature is not applicable to this Product This Feature is not applicable to this Product Yes Proximity Waypoints Yes Yes Yes Tide Prediction This Feature is not applicable to this Product This Feature is not applicable to this Product Yes Voltage Range 10-40 10-40 10-40 Waypoint Icons Yes Yes Yes