Product Name: Vision Chart Projector for Hot Sale Model NO.: LY-21B Group: All Certification: CE, FDA, ISO13485 Type: Vision Charter Classification: Imaging Diagnostic Equipment Projection Distance: 3m to 6m Projection Scale: 30X (at The Distance of 5m) Charts: 39 Selections Chart Changeover Speed: Average of 0.2 Seconds or Less Trademark: New Vision Transport Package: Standard Export Package Specification: CE, ISO Origin: China HS Code: 9018500000 Product Description Vision Chart ProjectorAdjusted according to the national standards, LED light source, aluminium alloy frame can be folded.Dimension:285*915*30mmTest Distance:5m