High Performance Hi-Target V90 Plus Gnss Rtk Receiver Multi-Constellation Tracking. Multi-Constellation Tracking: 220 channels support GPS, GLONASS, GALILEO, BDS, and SBAS for superior signal stability. High Precision Accuracy: Horizontal accuracy up to 2.5mm+0.5ppm RMS in static mode for professional surveying. Tilt Surveying Capability: Supports tilt survey with a maximum angle of 30 degrees using electronic bubble calibration. Rugged IP67 Design: Dustproof and waterproof, survives a 2-meter fall onto concrete and temporary water immersion. Long Battery Life: 5000mAh Li-ion battery provides up to 12 hours of static operation and 10 hours of RTK rover use. Smart Operating System: Built-in Linux 3.2.0 with NFC, voice DIY, and pre-loaded tilt surveying applications. Versatile Radio Options: Switchable base/rover modes with three internal UHF radio types compatible with SATEL. Fast Initialization: Network RTK initialization typically completes in under 8 seconds with over 99.9% reliability.