It can be quite easily used under the following conditions:

Operate or read at a dim or dark place;
Interesting work such as carving, handcraft and sewing;
Assemble or repair small fittings;
Check the finished product.

Detachable bulb devices; the angle of lamplight can also be adjusted.

The lens asssembly parts are added to two; you can also overlap two lenses.

You can also use this product even if you wear glasses. the belt sizecan e adjusted freely.

Features:

3 Lenses includes
Multiplying power of lengs: 1.5x, 3x, 8.5x, 10x
Material of Lens:Acrylic resin(Processed by crack-proof rigid coating)
Size of lens: 89x29mm
Single-lens diamter:29mm
With detachable light source box and two "AAA" batteries.
Weight: 101g(when equipped with 2x lens)
Weight: 148g(2x lens, light source box and two "AAA" batteries)
Materials: ABS resin. PP resin
All the lenses of this glasses series are interchangeable

Package Includes:

One magnifier