These are the glow-in-the-dark golf balls that ensure players can finish the last few holes when the sun has set and twilight arrives. Employing a real golf ball with phosphorescent material integrated into its shell, each is charged in just 45 seconds using an included charger that provides 250 lumens from 15 LEDs—the high-intensity light activates the ball’s material while the charger fits into a cart’s drink holder. These official weight balls perform with all the accuracy and distance of regular balls, sailing true off the tee up to 400 yards and biting the green. Requires three AA batteries. Includes six balls. Cup 5 1/2" H x 3 3/4" Diam. (6 oz.)