This is the rover-only configuration of the Mars Pro kit, pairing one Mars Pro receiver and controller for use with a separate base station or network RTK corrections. It carries the same 1,668-channel tracking, OLED display, IP67 sealing, and laser offset-measurement capability as the base-rover kit, just without the second unit needed to run your own local base. Dual Li-ion batteries and an internal UHF-GSM modem round out a kit built for all-day, self-contained fieldwork.