The new generation of the popular ProChrono model based on a time proven design that has been measuring "almost anything that since since 1985! Great for firearms,shotguns,archery,airguns,and paintball. Requires one 9volt alkaline battery(not included).

Features:Velocity Range 20-9,999 fps;size: 16"x4"x3-1/4";weight 2.1 lbs;Battery required: One 9-volt alkaline battery;Review statistics Capability: Individual shot velocities,High,Low,Average,Extreme Spread, and standard deviation