Abstract: A golf ball impact detection system to assist a golfer in reducing premature head-up movement. The impact detection system includes a sound detection device for detecting an impact sound of a club head with a golf ball and a light source which turns on immediately upon detection of the impact sound. When the impact sound is detected, an electrical circuit processes the impact sound signal and turns on the light source for a predetermined time. A short light flash is intended when the golfer uses a driver or iron club, while a longer light flash is for putter or pitching wedge applications. A day or night selection switch is provided for the altering between daytime or nighttime applications. The flash of the light source encourages a golfer to keep his head down after the club head strikes the golf ball, thereby reducing premature head-up movement, since the golfer will wait to see the light flash before looking up to see his shot.

Abstract: A device which monitors the head turn movement of a golfer during a golf swing. It gives the golfer instantaneous feedback by informing him whether his head turned prior to or after the golf club struck the ball. This feedback is done in the form of a digital LCD display of the time difference in milliseconds and also in the form of audible beeps. From this information, the golfer can make the necessary adjustments and corrections in the execution of his swing. The device is compact and portable. It is placed near the golf ball such that the ball lies directly between the golfer and the device. After the information is displayed, the device automatically resets and readies itself to monitor the next golf swing.