Humminbird Lakemaster VX Manitoba microSD 601019-1

One-Boat Network — Connects your Humminbird LakeMaster chart and Minn Kota trolling motor, allowing your boat to automatically follow a depth contour line. Water Level Offset — Synchronize the depth contours and shorelines of your LakeMaster charts with the actual water levels of lakes, reservoirs and rivers.

eBay