Product Code: 4148Description: ZYL Top 49Frame Colour: CrystalDioptres: +4.00DPrism / Lens: OU6 ^ B10U4148 Aspheric Prismatic Half-Eye SpectaclesPart No:4148 Technical SpecificationsDescription: ZYL Top 49 Frame Colour: Crystal Dioptres: +4.00D Prism / Lens: OU6 ^ B10U