Double slot for mounted lenses up to 23 magnifications - Exclusive design with a total of 6 lenses: Round auxiliary lenses (8 x) + 5 interchangeable rear lenses (1.0 x 2.0 x 2.5 x 3.0 x 3.5) in the storage box, the two lens slots can be loaded with one or two lenses simultaneously among the 5 available (1 x 1.5 x 2 x 2.5 x and 3.5 x). 3 lenses combined to achieve up to 23 types of magnification: 1x,1.5x,2x,2.5x,3x,3.5x,4x,4.5x,5.5x,6x,8x,9x,9.5x,10x,10.5x,11.5x,11x,12.5x,12x,13x,13.5x,14x.

Humanized fit - Designed with 3 adjustable knobs: Two rotary knobs on the left and right side, turn counter-clockwise to adjust the height of the magnifying glass. One knob to adjust the size of the headband to fit different heads. You can also adjust the lens angle or the orientation of all lenses mounted on the magnifying unit, especially the small round lens (360° rotatable), it can be rotated upwards if not needed.

More precise lighting angle - The lighting unit has a 45° rotation up and down when the light frame is on, in addition, the part of the 3 LED lighting on the lighting unit can be easily adjusted left and right with your fingers for more precise lighting. And this part can also be removed to be used as a standalone flashlight for daily use or outdoor use.

Comfortable and portable - Padded headband made of breathable soft terry fabric for comfort during use. Forget tangled cables when using and don't worry about the lifespan of the traditional electrical circuit to supply power by simply installing 3 AA batteries (AA batteries not included) and take your headphones wherever you want. It is cordless and therefore light and compact to carry.

Practical work light: Magnifying work light, with magnifying scales, helps improve weak vision and gives you a clear view even for sewing. Made as a headband style, completely hands-free. Perfect for reading, painting, observation, modeling, repair, sewing, welding, jewelry making and other crafts.