The Kestrel 5700 Ballistics Weather Meter with Hornady 4DOF takes the guesswork out of long-range shooting. Ideal for precise long-range calculations using low-drag precision bullets, this ballistic calculator provides trajectory solutions based on projectile drag coefficient (not ballistic coefficient) along with the exact physical modeling of the projectile and its mass and aerodynamic properties. Additionally, it calculates the vertical shift a bullet experiences as it encounters a crosswind; referred to as aerodynamic jump. It also accurately calculates angled shots by accounting for important conditions. In addition to the ballistics solver capabilities, the Kestrel 5700 is a comprehensive weather meter for measurement and logging of primary environmental conditions: wind speed and direction, temperature, humidity, heat index, pressure, and altitude. It offers a large, high-resolution and contrast display with ease of font readability. It also includes a built-in dual color backlight, extra-strong polycarbonate lens, AA battery operation, and LiNK iOS and Android wireless connectivity and app support. It's drop-tested, dustproof, waterproof, and able to withstand harsh environments without damage, so it can accompany you to the range or hunt for years to come. Precise long-range calculations using low-drag precision bullets Provides trajectory solutions based on projectile drag coefficient, exact physical modeling of the projectile, mass, and aerodynamic properties Calculates vertical shift as bullet encounters a crosswind Calculates angled shots Comprehensive weather meter measures wind speed and direction, temperature, humidity, heat index, pressure, and altitude High-resolution contrast display with dual color backlight Extra-strong polycarbonate lens LiNK iOS and Android connectivity Drop-tested, dustproof, and waterproof