OptiVISOR 10 Dioptre or 3.5 power. Works best at 10cm,[4]
Working distance of 20 inches. 1-1/2x Power. Reduces eyestrain. Glass lens flips up when not in use. Padded forehead for longwearing comfort. Hands-free optical binocular magnifier with a precision ground and polished glass lens is for use on viewing items 20 inches away. Powerful 1-1/2 times magnification makes this great for viewing fine print or small items without eyestrain. Adjustable frame is made of lightweight durable impact-resistant materials.
Optivisor 2x at 10
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Donegan OptiVisor DA-10 Headband Magnifier Binocular 3.5X Optical Glass Lens
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DONEGAN OPTICAL-OptiVISOR LX Binocular Headband with Optical Grade Lensplate #7-Magnifies 2-3/4x Power at 6 Inch. Perfect for anyone whose profession or craft requires close accurate work with both hands free! The adjustable side pivots allow the visor to tilt at your fingertips and a dial adjustment headband that conforms to comfortably fit all head sizes. The LX has a genuine leather padded comfort band with orthopedic felt for extra comfort.
Original Donegan Optivisor Head Magnifier DA-10 3.5x Jewelers Watch
DONEGAN OPTICAL-OptiVISOR LX Binocular Headband with Optical Grade Lensplate #7-Magnifies 2-3/4x Power at 6 Inch. Perfect for anyone whose profession or craft requires close accurate work with both hands free! The adjustable side pivots allow the visor to tilt at your fingertips and a dial adjustment headband that conforms to comfortably fit all head sizes. The LX has a genuine leather padded comfort band with orthopedic felt for extra comfort.
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