HVM-4 3.5xl Is the same as our HVM-4 Premium Binocular Headband Magnifier Visor but with 3.5x and 4″ Focal Length and 5x swivel eye loupe that adds extra magnification for one eye very close up inspection and detail work. Fully adjustable to fit any size quickly and easily.Headband is adjustable +/- 60% either way The 3.5x lens gives you an versatile and close working distance / focal length of 4″. Can be worn over glasses. Lens is 10 Diopters.
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