You can adjust the illumination direction of led for more precise illuminating angle to meet your need. Adjustable lens angle and LED light source irradiation Angle so that the light source can accurately irradiate on the surface of the object to be observed. What s more it can greatly reduce the weight of the reading magnifying glass and thus reduce the pressure on the bridge of the nose. Keeping the bridge of your nose at ease. The improved lens slot can lock the lens tightly to prevent the lens from falling off due head movement. It is also easier to install and disassemble the lens. 4 High Quality Interchangeable Lens: 4 Pairs of replaceable lens included with different magnifications (10X 15X 20X 25X) can be interchanged quickly. See Small Things Better at Night: The headband magnifier has adjustable LED glass lamp with strong light and soft light provides sufficient brightness in any dark or dim environment which enable you to see small things better at night. Adjust the Angle of The Lens: Eye patches can rotate 150 degrees upwards and downwards. That adjust the angle of view of the object being viewed by adjusting the spin button giving you the best viewing angle in any sitting position. Application Range: The reading books newspaper read crossword puzzles cross stitch suitable for children to observe insects. Rpairing electronics cataloguing coins help produce small， precise handicraft workers reduce eyestrain，appreciating flowers/potted landscapes etc. Specifications: Type: Eyewear Magnifier Material: ABS+ Acrylic Glass Magnification times: 10x 15x 20x 25x Battery: 3 x AAA battery(not included) Package Included: 1 X Eyewear magnifier 1 X Headband 4 X Pair of lens 1 X User manual