The kestrel 5700 elite weather meter with applied ballistics takes the guesswork out of long-range shooting, even out to the transonic and subsonic flight range of your bullet.The kestrel 5 series platform 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.The kestrel link ballistics app helps you build and manage your gun/bullet profiles and download them to your kestrel 5700 elite before you set out.Choose from the extensive litz library of custom bullet drag models for the most precise transonic and subsonic range solutions available anywhere.Link enabled units can also be wirelessly paired with link compatible laser rangefinders.In addition to the ballistics solver capabilities, the kestrel 5700 elite is a comprehensive weather meter for measurement and logging of primary environmental conditions, including wind speed and direction, temperature, humidity, heat index, pressure and altitude.The kestrel 5700 elite is drop-proof, dust-proof, waterproof and able to withstand harsh environments without damage.Function: Measures WeatherRange: 100 ftBattery: AAScreen Type: LCD DisplayProofs: Waterproof/Shock ResistantBacklight: YesColor: BlackCompatible With: iPhone/Android