FEATURES:
1、Unique design of butterfly-shape appearance.
2、Capable of checking up all-sided visual functions, accurate and comfortable in measurement.
3、Exquisite manufacturing technique, with comfortable feel.
4、High grade plated-film used in all optic lenses

MAIN TECHNICAL INDEXES
1、 Sphere power：Range：+1675D～－19.00D Step：0.25D When applied with auxiliary lens +0.12D Step：0.12D 2、Cylinder power：Range：0～－6.00D
When applied with auxiliary cylinder lens －2.00D：0～－8.00D Step：0.25D When applied with auxiliary cylinder lens +0.12D Step：0.12D 3、Cylinder axis：Range：0～180° Step：5°
4、Cross cylinder：±0.25D
5、Rotary prism：Range：0～20△ Step：1△
6、PD adjustment：50～75mm Step：1mm
7、Convergence adjustment：∞，380mm（When PD 64mm）
8、Forehead rest adjustment：16mm
9、Vertex distance：13.75mm From corneal point to standard lens surface）
10、Dimension：335（L）×320（W）×98（H）mm
11、Weight：Approx.5kg