Product Code: 6329Dipotres / Mag: 54.9D / 14.7xLens Diameter: 30.8mmImage Vergence: -2.5DEffective Focal Length: 18.20mmField of View on Page: 26.0mm6329 (14.7x) Standard Battery High Powered RaylitePart No:6329 Technical SpecificationsDipotres / Mag: 54.9D / 14.7x Lens Diameter: 30.8mm Image Vergence: -2.5D Effective Focal Length: 18.20mm Field of View on Page: 26.0mm