The SkyCaddie SGX is the perfect marriage of technology and golf.  Although not legal in tournament play, this handy little device can take a casual round of golf to the next level.  The SkyCaddie uses the same technology as GPS devices.  The data for about 30,000 courses is preloaded, allowing to determine various distances on the green without having to do time-consuming calculations. 

The SkyCaddie SGX is the size of a cell phone and can be easily clipped onto a belt or golf bag. A bright color display makes the SkyCaddie easy to read in full sunlight. More in this video: