Experience the blue Night Eagle CV LED golf ball with all new constant on patent pending technology! Starting or finishing a round of golf at night has never been easier. The Night Eagle CV LED golf ball activates differently from a traditional LED golf ball. To activate you shine a strong light source, such as the light from your smartphone camera about 1/2 inch from the printed circle on the ball. Upon sensing the strong light, the computer will automatically turn on the LEDs. Once the LEDs are activate they will continue to emit light until another strong light is sensed. There is no timer inside our LED golf ball, once activated it will stay continusly lit until turned off. The days of trying to find your LED golf ball is over! Designed and tested with the professional golfer in mind, you can expect the play ability, performance, and control of a real ball with an added glowing bonus. We do not recommend using our golf balls with newer thin faced drivers, please use with irons only.