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. Sensing system compatible with a wide variety of light conditions and projectiles. Faster internal shot clock for improved accuracy to +/- .5% or better. Made in the USA quality at an affordable price. | Two year warranty 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. Quality accessories and replacement parts at a reasonable price. Made in USA with real service and support. |