Play or practice in the dark with the Go Sports LED Golf Balls! Now anyone can take the fun of golf into the night. Golfers can now practice or play with limited light thanks to the ultra-bright LED core and battery built in to each golf ball. The LED Golf Balls are activated on impact on a 10 minute timer for nighttime chipping or putting practice, short hole courses with friends and more! Pro Tip: Leave an illuminated ball or two in the cup during play so you can see where to aim. Due to the built-in LED components the balls fly about 65% as far as a standard golf ball, making them great limited flight balls for practicing at home or on the course after the sun sets! Now take a swing at nighttime golf with the Go Sports LED Golf Balls!