Competition Electronics Prochrono Digital Chronograph and Purchasecorner Polish Cloth Bundle

Velocity Range: 21-7,000 feet per second.Temperature Range: 32-100 degrees Fahrenheit. Size: 16 x 4 x 3-1/4 inches/ Battery Required: One 9-volt alkaline battery (not included).Mounting Hole Thread: 1/4 x 20.Guide Wire Size: 3/16 x 16 inches. Memory Capacity: Up to 9 strings of up to 99 shots each.Minimum Time Between Shots: Between 250 mSec and 500 mSec Shot Timing Resolution: 750 nSec Crystal Controlled.Accuracy: +/-1% of measured velocity, or better.Current Consumption: Approx. 15mA