Characteristics:

Perfect optics system offers clear image of eyeground. The filters and the glasses are i
mported from Germany, which are multi-coated, mildewproof and anti-reflection.

Specifications:

Illumination form: Large light spot: 3.2mm, Small light spot: 1.6mm, Slit, central-net,
slit, Redfree filter
Diopter compensation: 0, +/-1D, +/-2D, +/-3D, +/-4D, +/-5D, +/-6D, +/-8D, +/-10D,
+/-12D, +/-16D, +/-20D, -25D
Light source: 2.6V, 1.6W White LED
Power supply: DC 2 batteries of A type/ 1.5v