What grade does the field lens belong to?

High-end grade. According to the brand website, Vision Link lenses have chain stores all over the country, and have obtained brand sales authorization from companies such as Essilor, Zeiss, Yue Ming, Tyrannosaurus, Pasha, schloss, Bonnie and Baosheng. The quality of Vision Link lenses is guaranteed and genuine products are provided. In addition, Vision Link lenses are made of original Zeiss lenses, which can prevent blue light and relieve eye fatigue. Generally speaking, visual link lenses.