The Stalker Pro II - the baseball radar gun used by Major League Baseball.
Baseball Radar Gun – Best Radar For Baseball Speed & Pitching - Pocket Radar Inc.
Pocket Radar Ball Coach Training Tool and Radar Gun
Amazon.com : Stalker Pro IIs Sports Radar - The only Hand-held Baseball Radar Gun That captures Ball Spin Rate in Real time - no delay and no estimations. : Sports & Outdoors