Durable construction

Lightweight and comfortable to wear

Practical,screw-thread design

Wide range of adjustments for aperfect fit every time

Range of PD adjustments:

PD of both eyes48～80mmleft or right PD24～40mmMinimum graduated value   1mm

Dividing disc axial graduation:

Left dividing disc1200～00～1350Right dividing disc450～1800～600

Axial graduation increases along the lens frame axis counter clockwise,andthe graduated distance is 50.

Inner diameter of lens frame:F32.5mm

Number of lens inserted into left or right lens frame simultaneously:4 pieces