The HiPer HR GNSS receiver overcomes field challenges with a unique blend of technologies. If you are under tree cover, or can't get the pole plumb, or need to range widely from your base, or you need superb accuracy, or work in wet conditions, or all of the above, youâ??ll be free to do your best work. Features include Next generation Fence Antenna for superior reception Rugged, waterproof IP67 environmental design Cellular, LongLink and Radio communications all integrated 452 Universal Tracking channels Unique 9-axis TILT compensation Internal Wi-Fi and multi-spectrum Bluetooth HiPer HR Specifications GNSS Tracking Number of Channels: 452 with patented Universal Tracking Channel Technology GPS, GLONASS, Galiileo, BeiDou, QZSS, SBAS, L-Band Satellites Tracked: All in view Update/Output rate: Up to 20 Hz Communications Radio: UHF(410-470MHz), SS (915 MHz) LongLink: Yes I/O Communications: Internal Cell modem, Wi-Fi, Bluetooth Memory/Data Storage: Up to 8 GB Power and Electrical Power: External power, 6to28VDC, 2 x Internal batteries, 3.7 V, 2900 mAh each Operation Time: Up to 9 hours with removable batteries Physical and Environmental Operating Temperature: -40�°C to 80�°C Waterproof: IP67 Drop Test: 2 meter pole-drop Weight: 1kg Accuracy Static/Fast Static:: H: 3 mm 0.4 ppm, V: 5 mm 0.5 ppm Precision Static: H: 3 mm 0.1 ppm, V: 3.5 mm 0.4 ppm RTK (L1 L2): H: 5 mm 0.5 ppm, V: 10 mm 0.8 ppm RTK, TILT Compensated:H: 1.3 mm/