The World's First Glasses You Adjust To Give You Crystal Clear Vision!The Perfect backup for lost or damaged prescription eyeglasses!FEATURES & BENEFITSEasy-to-use sliding lens technologyMoving the dial adjusts the power of the lensesFully adjustable lenses can also easily transform to reading glassesMade of the highest quality, impact resistant optical lensesFlexible, durable frames won’t breakDeveloped in Oxford, England by top optical scientistsQuickly transform from distance to reading glasses - like 2 pairs in 1!You can customize the prescription for each individual eyeComes with Soft Eyeglasses Pouch & Eye ChartMagnification: -6D/+3DAssembled Product Dimensions (L x W x H): 1.50 x 6.88 x 9.75 InchesDial Vision is convenient & simple to use:The dials on both sides slide the independent lenses to increase the power. Adjust one eye by turning the dial until the chart comes into focus and then adjust your other eye to match. No doctor visits or big expenses! PLEASE NOTE:These eyeglasses will not correct astigmatism.DO NOT use for driving and/or other operating heavy machinery.Eye examinations can detect health problems that have not signs or symptoms.NEVER disregard professional advice or delay in seeking it because of your purchase, receipt, or use of these glasses.