Description : PR1000 Accurate speed measurement in a convenient size for many uses including sports, hobbies, traffic safety, neighborhood safety, and more. Manual one-button operation lets you decide what to measure and when. Improve your skills in running, throwing, hitting, serving and shooting by incorporating instant feedback. Affordable speed radar by coaches, athletes and everyday people from pro to amateur. Small size of 2.3 by 4.7 by 0.8 inches (WxHxD) and only weighs 4.5 ounces with batteries. 10,000 readings on a single set of AAA batteries (included).