Tiger's got one of these built into the side of his head.  You're just getting even.

Take your game to the next level with - the compact Yardage Pro XGC. The 2.2" High Resolution screen gives you your last shot, as well as distance to any point on the hole, at a glance and in vivid, sun-light readable color. You can download color maps, and the unique hole up tracking feature gives you a "down the fairway" perspective, for easier and better course management. It stores up to 100 courses, and it's scorekeeping and statistic capabilities make the Yardage Pro XGC golf's ultimate GPS, tool.