It has 5 interchangeable lenses - 1.0X, 1.5X, 2.0X, 2.5X, 3.5X. The different lenses can be changed and easily removed at will. The lenses help you to get a larger, wider picture. Super light - 2 LEDs provide sufficient brightness for the enlarged viewfinder. Done in good quality The light indicates where you are looking and the lens moves so you can see more clearly and distinctly. Very easy and lightweight to use. (3 AAA batteries not included) Adjustable tape design - a practical alternative to an elastic band for spectacle frames that prevents falls for long periods of time and reduces pressure on the bridge of the nose, thus reducing fatigue. Comfortable, simple and adjustable - perfect for any situation. You can adjust the spacing between your eyes and the lens, the angle of the lens, the angular illumination. Very easy to use, high stability, good light and easy to change lenses. Perfect multi-purpose tool for all kinds of repairs, electronic repairs, watch and telephone repairs, cross-stitch, jewellery and watchmaking, as well as for handling small things etc. He is a great assistant to see things clearly.