Atomic 1-pin lighted sight has a fiber optic light gathering ring the makes the sight pin glow even when the battery is not turned on. Other features include an 1.8" inner diameter aperture giving you a larger view to see moving fish. Plus the outside edge of the ring glows in the dark for evening bowfishing! It has laser markings for windage and elevation adjustments and a built-in level. Can be used by right or left handed shooters. Black housing with a violet LED light. Batteries included. The Atomic Sight mounts directly under the AMS Retriever Pro reel and won't interfere with its use.