Garmin Approach G3 2.6″ Waterproof Handheld Golf GPS Take the guesswork out of your golf game. With the highly sensitive Approach G3 GPS, you can pinpoint your exact position on detailed, preloaded golf course maps throughout the US and Canada. As you move, the pocket-sized, waterproof device updates your position, so it’s easy to determine the exact yardage to a spot like a hazard or the green. From Garmin. Price: