Caldwell Chronograph with led screens

Ballistic Precision Chronograph from Caldwell. It can deliver  data to your iPhone®, iPad® or Android device through the use of the included 15-ft. audio jack cable and an available free app that exports via SMS or email. This handy app adds to your experience by automatically calculating average velocity, standard deviation and the minimum, maximum and velocity spread of each shot string. Includes extra-wide sun screens, LED screens and a convenient carry bag.