~Because your personal eyesight is different, if you find that the image is not clear enough after wearing the magnifying glass, you can slowly turn the focus wheel on the left and right sides to focus on the fine adjustment, you can see the image and close one eye during the operation. ~ Wearing method: The correct way to wear is the basis of clear images. Keep the nose pads tightly attached to the bridge of the nose. The entire framework should not be too high or too low. ~ It is recommended that when using a remote magnifying glass, it should be observed from a distance of 1-3 meters from the object. If the distance is too close or too far, the image will not be clear enough. ~ Note: adjustable focal length 60-68mm, field of view is 1-3 meters, myopia / amblyopia 0 ~ 300 degrees available, presbyopia / farsighted 0 ~ 300 degrees. ~ Size parameters: total length is 14.1cm, small lens diameter is 1.7CM, large lens diameter is 3.3CM, temple is 13.2CM, focal length is 3CM.