The Caldwell Ballistic Precision Chronograph Premium Kit is the next generation of digital precision, designed to function as a traditional Chrono with the option of integrating with an advanced iPhone / iPad app for enhanced data capabilites. It's simple to use, amazingly accurate, and its large LCD screen is easy to read, even in the sun. Extra-wide sun screens are included for shading in full sun operation. Includes 15' audio jack cable, which can be plugged into an iPhone or iPad to use a free app called inchBallistic Chronometer inch available for download. App displays the velocity of each shot on the screen and records it with other data that can be stored and easily exported through email or SMS messaging. Accurate velocity reading from 5 to 9,999 FPS Precision accuracy margin of .25% High-speed 48MHz processor delivers fast, accurate results Measures in feet per second or meters per second Large LCD screen Uses 9V battery for chronograph, 4 AA for light kit (batteries not included) Includes 2 sunshades, 15' audio jack cable, custom carry case, tripod and light kit Made in the USA Order today!