Visual Tracking Magnifier Blue (1.5x)

Bi-Axial Magnification: 1.1x / 1.5

Visual Tracking Magnifier Blue (1.7x)

Magnification: 1.7x

Visual Tracking Magnifier Clear Reader Blue

Bi-Axial Magnification*: 1.1x / 1.5

Bi-Axial Magnification*: 1.1x / 1.5Lens Diameter: 117 x 24mmImage Vergence: -4.0DEffective Focal Length: 31.53mmField of View on Page: 112 x 24mm *Real Magnification when laid flat on page.