The C1 Series from Bynav is a GNSS high-precision positioning and heading board based on the Alita baseband ASIC and Ripley RFIC, with the REAL positioning engine. Available in C1-8D (8-frequency) and C1-FD (full-frequency) variants, it provides full-constellation multi-frequency RTK positioning and dual-antenna heading with 1 cm plus 1 ppm RTK horizontal accuracy and 0.2 degrees per meter heading accuracy. It features enhanced connectivity including serial, CAN, and Ethernet in a compact 71 by 46 by 11 mm form factor weighing 20 g with typical power consumption under 2 W.