Benchmark Supply F8 Rover GPS Surveying Package (i89-RSV)Specifications Channels: 1408 Constellations: GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS RTK Initialization: Typically < 10 seconds RTK Accuracy: H: 8 mm + 1 ppm RMS; V: 15 mm + 1 ppm RMS IMU Tilt Compensation: Up to 60 Internal UHF Radio: 1W (410470 MHz), range up to 8 km (optimal conditions) Battery Life: Up to 16. 5 hours Communication Interfaces: Bluetooth, Wi Fi, NFC Ports: USB Type C, external antenna port Ingress Protection: IP68 Shock