What makes the Furuno GNSS one of the most in demand and highly rated receivers in the industry is its high position accuracy. The GN-8620 boasts GPS accuracy of 2.5m (CEP) and GPS + SBAS accuracy of 2.0m (CEP). The GN-8720 adds GPS + SBAS + GLONASS accuracy of 2.0m (CEP) to the already impressive GN-8620 accuracy ratings.