ProChrono DLX Chronograph (built-in Bluetooth)

Introducing the ProChrono DLX ballistic chronograph with improved accuracy specs and built-in Bluetooth   Onboard Bluetooth connectivity, and more options with FREE apps for iOS, Android, Kindle, PC, and Mac Internal and external refinements with updates to the circuitry and enclosure design Built-in full featured operating system with multiple shot string memory and statistics Memory Capacity: Up to 9 strings of up to 99 shots each Sensing system compatible with a wide variety of light conditions and projectiles Faster internal shot clock for improved accuracy to +/- .5% or better Minimum Time Between Shots: 500 mSec Made in the USA quality at an affordable price 2 year warrantee against defects in material and workmanship, and a 1/2 price repair guarantee Over 30 years of experience in chronograph design and manufacturing Replaceable Alkaline 9 volt battery power (not included) for 20+ hours of operation Bluetooth: BT2 and BT4LE Temperature Range: 20-100 degrees Fahrenheit Velocity