Get the world s most complete ballistics calculator -- a rugged Kestrel Weather Meter with the science of accuracy built in! Get accurate measurement of wind and air density to deliver elevation and windage solutions for unprecedented accuracy on extended long range shots. Employs the Applied Ballistics bullet library of custom drag models an exact measurement of your bullet’s drag profile plus corrections for Aerodynamic Jump Spin Drift Coriolis and Drop Scale Factoring to achieve accurate extended long-range shots. Expanded features include a customizable Target Card and an expanded Ballistics Data Table as well as storage for up to 30 gun and bullet profiles and 10 saved targets. Weather mode offers the full environmental measurements storage and charting capabilities of the Kestrel 5500 Weather Meter including wind speed direction crosswind temperature humidity pressure and altitude. LiNK connectivity powered by Bluetooth low energy provides wireless communication to mobile devices and computers and integration with LiNK compatible laser range finders for improved speed and accuracy. (Note: LiNK Dongle sold seperately). Kestrel LiNK for Ballistics app on Android and iOS provides full gun management as well as access to the Applied Ballistics library of custom drag models for transfer to the Kestrel. Large hi-res hi-contrast graphic display is perfectly readable in the brightest sunlight. Includes both bright white and night-vision-preserving red backlight. Choice of solution units (Mils true MOA Shooter’s MOA or clicks) - works with any gun or targeting scope. Rugged (drop tested to MIL-STD-810G standards) waterproof (sealed to IP67 standards).