Sinognss Comnav Full-Band High-Precision Gnss Antenna At600 Choke Ring Antenna. Full-Band GNSS Support: Tracks GPS, GLONASS, BeiDou, BeiDou Global, Galileo, QZSS, IRNSS, SBAS, and L-Band. Rugged Durability: IP67 waterproof rating and survives 1-meter drops in harsh environments. Global OEM Manufacturer: ComNav Technology provides OEM/ODM services with global support network. Fast Delivery: Sample lead time within 7 days upon receipt of payment. Comprehensive Calibration: Calibrated against IGS and NGS standards for high reliability.