Garmin Approach G12 Clip-on Golf GPS Rangefinder - Clip this thin GPS golf range finder to your pocket or golf bag to see distances to the green at a glance on more than 42,000 courses worldwide — for up to 30 hours on a single charge. Mount it wherever you need it by using the built-in clip and lanyard loop. You probably won’t play all 42,000+ preloaded courses, but it’s nice to have the option. Big Numbers Mode means you won’t squint to see the precise yardage measurements. Compete, compare and connect with the Garmin Golf app on your compatible smartphone. Paired with Approach CT10 club trackers, you’ll be amazed at how accurately this thing tracks your shots. Hit the course more between charges with up to 30 hours of battery life.