The Competition Electronics ProChrono DLX Bluetooth Chronograph Combo Kit includes the ProChrono DLX, ProChrono Light System and the ProChrono Carrying Case. Introducing the ProChrono DLX ballistic chronograph with improved accuracy specs and built-in Bluetooth. The next generation of their ProChrono model based on a time proven design that has been measuring " almost anything that shoots" since 1985! Great for firearms, shotguns, archery, airguns, and paintball. FeaturesOn-board Bluetooth connectivity for iOS and Android.Internal and external refinements with updates to the circuitry and enclosure designBuilt in full featured operating system with multiple shot string memory and statisticsSensing system compatible with a wide variety of light conditions and projectilesFast internal shot clock for accuracy to +/- .5% or betterMade in the USA quality at an affordable price2 year warranty against defects in material and workmanship, and a 1/2 price repair guaranteeOver 30 years of exp...