Improved display, processor and data logging. Same dependable weather measurements, including wind direction, headwind and crosswind.;Optional wireless LiNK communication with the free Kestrel LiNK app and compatible PC, Mac, iOS and Android devices. Add a Vane Mount for hands-free monitoring.;Patented accuracy - NIST-traceable calibration.;Rugged, waterproof and reliable in the most demanding conditions. IP67 & MIL spec rated.;5-year limited warranty and made in the USA.