|If you need to improve you golf level, this kit packed a LCD PDA, you can practice in your office. The DiXX Digital Putter($900) promises to drastically improve your putting skills. It features uses an onboard PDA-like computer to monitor your swing. The DiXX computer has an "inertial navigation system" which keeps track of when and where the putter hits the ball as well as a "micro electrical mechanical system" which monitors the motion of your swing. DiXX tracks the swing path, impact position, face angle, swing tempo and speed balance. With that information, the the putter can figure out how good your putt was, so it can provide feedback in 5 areas. It use the 2 AAA batteries. I search from the amazon, I find the same tool just $400.