Kestrel 4500 Shooter's Weather Meter with Horus Ballistics

Waterproof & floats (IP-67); drop-tested to MIL-STD-810F; customizable automatic/manual data logger backlight; patented impeller and sensor technology; no-tools, user-replaceable impeller; flip-open impeller cover; quick-response external temperature sensor; temperature-controlled humidity sensor; individually calibrated; designed and manufactured in the USA, 5-year warranty. Precision Long-Range Shooting Use a Kestrel 4500 Shooter's Weather Meter with Horus Ballistics to measure every environmental factor that impacts the accuracy of your shot. With its integrated digital compass and patented impeller, the Kestrel 4500 with Horus Ballistics measures wind speed and wind direction, and calculates crosswind and headwind with respect to the target. Plus it measures air pressure (actual and barometric), altitude, density altitude, temperature and relative humidity and logs up to 2000 sets of data automatically or manually. Serious shooters don't estimate - they use Kestrel.