1. International Advanced Trimble BD970 motherboard,Multi-Satellite, Multi-system kernel 2. Built-in Transmit-Receive UHF, Exchangeable Base and Rover 3. 1+X Multi-Module Communication Units 4. Configured with PCC radio, Compatible to Co-work with RTK ceceivers of Trimble, Leica ect. 5. Syoer kibg dustabce exterbak radui radio optional 6. Fully strongest waterproof, dustproof, broken-resistant 7. With intelligentialized self-diagnosis function 8. Double battery capacity, with 4400mAh capacity for a single battery 9. Config Multi-function RTK controller iHand Series 10. Voice navigation of RTK handhel software GNSS satellites tracked: Galileo (y/n/upgrade) Upgrade Glonass (y/n/upgrade) Yes GPS (y/n/upgrade) Yes Compass (y/n/upgrade) Upgrade Multi frequency RTK capable (y/n) Yes DGPS: WAAS/EGNOS (y/n) Yes Beacon (y/n) No External RTCM (y/n) Yes Accuracy: RTK horizontal (mm+ppm) 10mm+1ppm RTK vertical (mm+ppm) 20mm+1ppm Static horizontal (mm+ppm) 2.5mm+1ppm Static vertical (mm+ppm) 5mm+1ppm Operational techniques: Stop/go kinematic (y/n) yes Rapid-static GPS (y/n) yes Full static (y/n) yes RTK transmit (y/n) yes RTK receive (y/n) yes. RTK installation time: 5-sat nav and corrections available (s)