The Ball Coach™ is specifically designed to measure the fastest speed of a ball in flight. Works great for baseball, softball, tennis, volleyball, lacrosse, hockey, and cricket. Easy trigger capabilities eliminate any timing requirements: Simply hold the button down well before the ball is in flight, and release once the speed is displayed. Enter Constant-On Mode to provide automatic triggering without the press of a button. Ball Coach measures from 25 mph to 130 mph and is accurate to within +/- 1 mph (+/- 2 kph), has 120 feet of range on a baseball and 25 deep memory. Includes soft-shell belt holster case, wrist strap, 2 AAA alkaline batteries, illustrated quick start guide and 2 year warranty.