This stand magnifier with an aspheric lens has the added feature of a tilting head. This allows the user to best angle the lens for their own reading position. Head can be tilted to suit either right or left handed users. The stand allows the magnifier to be held at precisely the right working distance to give a clear and steady image. Power: 3X; Diopter: 8D; Lens size: 81mm. One year warranty.