ComNav's step-up Mars Pro base-and-rover RTK kit adds a sunlight-readable OLED color display and a higher channel count (1,668 channels, 60+ satellites) over the standard Mars, while keeping the same rugged IP67 housing and internal UHF-GSM modem for a self-contained base-plus-rover setup with controller included. Its integrated laser can measure offset points beyond the GNSS pole's reach, and dual hot-swappable batteries support roughly 20 hours of continuous survey work with tilt-compensated accuracy to about 2.5cm.