The battery-free Trijcon AccuPin bow sight features a fiber optic pin, bright triangular aiming type, one yard increment adjustments, tritium-phosphor lamp, high impact shade shield, BowSync technology, and AccuDial. Whereas, the Trijicon ACOG Crossbow Scope features battery-free fiber optics, range finding reticle, bolt drop compensator, premium glass, broadband anti-reflective coated lenses, waterproof up to 100 meters, and is internally adjustable.