This Black Kestrel 5700 Elite Weather Meter with Applied Ballistics and LiNK features the enhanced applied ballistics G1/G7 solver with aerodynamic jump, spin drift, drop scale factoring, and coriolis corrections as well as muzzle velocity truing, choice of solution unites (Mils, MOA, or clicks), and a rugged, waterproof construction. The Sportsman also offers full environmental units, including storage and charting capabilities, wind speed, direction, crosswind, temperature, humidity, pressure, and altitude. LiNK technology provides wireless communication to mobile devices and computers. This product is also berry compliant and all textiles are sourced and made in the U. S.A. Kestrel 5700 Elite Weather Meter with Applied Ballistics with LiNK - Berry Compliant - Black 0857ALBLKM