Mat Board Center, Adjustable Headband ILLUMINATING Magnifier 2 LED with 5 Lenses: 1.0 x 1.5x 2.0 x 2.5x 3.5x, MG81001-G New Adjustable Headset Magnifier. Color: Black and White Product Includes 5 Single-Plate Lenses with magnification: 1.0x 1.5x 2.0x 2.5x 3.5x Has 2 mounts for the magnifier lens. Bi-Plate magnifications are 3.0x 4.0x 4.5x 5.0x 5.5x 6.0x Lenses size are 11 cm x 3.9 cm. Uses Three 1.5V AAA Batteries for the dual LEDs. Batteries are included in the package.