Benchmark Supply i83 IMU-RTK GNSS ReceiverSpecifications Channels: 1408 channels with iStar 2. 0 Supported Constellations: GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS, NavIC Initialization: <10s RTK Accuracy: H: 8 mm + 1 ppm; V: 15 mm + 1 ppm PPK Accuracy: H: 3 mm + 1 ppm; V: 5 mm + 1 ppm High Precision Static Accuracy: H: 2. 5 mm + 0. 1 ppm; V: 3. 5 mm + 0. 4 ppm IMU Rate: 200 Hz Display: 1. 1" OLED Color Display Operating Hours: Up to 35 hours IP Protection: IP67 Power Source: 7. 2V 9. 9Ah