This Excalibur Golf Master is like a professional caddy! The Golf Master tracks both traditional scores and popular betting games, knows the rules of golf, and can memorize the details of your favorite courses! At the touch of a button, scroll through a complete golf rule e-book with a built-in reader. Including the rules for 7 popular betting games, the Golf Master saves the details of 4 of your favorite courses. Slim, rugged, water resistant and compact, the Golf Master clips onto your golf bag or belt, keeps score for up to 4 players, and tracks the scores for 16 programmable player names.