Discovery Crafts DHD 40 head magnifier. The Discovery Crafts DHD 40 head magnifier is a great tool for work and hobby. It doesn't take up your hands, offers a few different magnifications and has an illumination. The head magnifier is practical for all precision work: Repairs, jewellery making, needlework and much more. The optical system of the head magnifier comprises two main lenses (rectangular, designed for viewing with two eyes) and a small circular lens (designed for viewing with one eye). The lenses can be folded to the side so that you can select a better magnification. The kit includes interchangeable lenses that also allow you to vary the magnification. All lenses are made of optical polymer glass, which provides a very clear and high-contrast image and is also very durable, and the head magnifier is equipped with LED lighting with an adjustable angle. This means that the device can also be used in complete darkness. The illumination is powered by standard batteries. The head magnifier is attached to the head with a size-adjustable headband. Illumination included. 3x AA batteries (not included). Illumination angle and lens angle are adjustable. Lens diameter: 100 mm. Diameter of the insert lens: 30 mm. Magnification of the inserted lens: 8 x. Magnification of the lenses: 1 x / 1.5 x / 2 x / 2.5 x / 3.5 x. Optical material: optical polymer glass. Body: plastic. Adjustable headband. Colour: blue.