Slip-on cushioned headband and reliable knobs allows you to position the dual lens right in your line of vision. Works well with or without prescription glasses. Each Mageyes unit comes with two interchangeable dual lenses. The Double Lo unit has a 1.6x and 2.0x magnifying lens and the Double Hi unit has a 2.25x and 2.75x magnifying lens. Get both so you have a full spectrum of magnifications to select from. As your eyes tire you can increase magnification strength. Weighs under 2 oz.
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