Night golf balls by Glow Flyer. Green color is by far the best for human eyes. These will last for over eight hours and offer the best performance in night golf -- electronic balls last about one round (or less) before the electronics are broken, and often turn off before you reach the ball, especially when playing in groups.
Glowing Golf Ball - Lights for over eight hours per glow stick
Includes one (2) glow sticks
Works better than electronic night golf balls
Green color is easiest for human eyes to locate
Ball can be refilled with new glow sticks