The Garmin Approach G3 and G5 model is waterproof. This is an older unit.

Garmin GPS device with a black USB cable. The product is a Garmin Approach Series golf GPS unit, specifically an Approach G3 or G5 model, shown with its owner's manual and a USB cable. These handheld devices are designed for golfers to get accurate distances to greens, hazards, and other points on a golf course. This comes preloaded with thousands of golf courses