Portable Doppler Golf Club and Bat Speed Velocity Calculator. Measures Speed from 20 to 200 MPH, Accurate for All Ages. Great Gift Idea for New, Rookie and Pro Golfers.Calculates clubhead or bat speed within a range of 20 to 200 miles per hour without being attached to your Golf Club or Baseball BatFor Golf, place the unit 8-10 inches from Tee if using a driver or fairway wood. If using an iron, place unit 14 inches to the rear and angle face to see the back of your club at impact.Works With Most Swing Speed Trainers - Works with the Stack System, RypStick, SuperSpeed Stick and other popular swing trainers. Combine this with a trainer, clubs and woods to increase speed and get more yards.Powered by 3 AA batteries (not included); ideal for both players and coaches/instructors. NOTE: Refer the Manual before use.[Made In USA] - Simple to use and easy to read using the same radar technology that defends our country with the Patriot Missile Defense System and reliable for over 20 years. Sports Sensors Swing Speed Radar Provides Accurate Personal Golf Club and Bat Swing Speeds 20 to 240 MPH. Doppler Radar Training Tool Establishes Training Consistency. Made In USA Track Page Views WithAuctiva's Counter