Cheaper sapphire glass windows for watch with AR coating

Place of Origin:

Jilin, China

Brand Name:

SUNDAY

Model Number:

SPL

Material:

Glass

Usage:

watch

Structure:

plano

Shape:

PLANO

material:

sapphire

diameter:

0.2mm to 300mm

surface quality:

40-20

flatness:

1/4lambda

tolerance:

+0.00/-0.05mm