This has to be the ultimate gadget for golfers. The Garmin Approach G5 is a waterproof, heavy duty touchscreen GPS device filled with thousands of individual golf course maps. Included are shot distances, exact yardage, hazards and green position. When you move, the Approach automatically updates your position. It also doubles as a digital scorecard for up to 4 players. There is no subscription or setup fee and as courses are added, the download is free. This is a good thing, as the system will set you back $499.99.