[Dimension]Lens width:52MM, Bridge width:18MM, Arm length:142MM, [Blue Light Blocking Lenses]It can effectively block harmful ultraviolet radiation and reduce the damage caused by harmful blue light. The yellow tinted lens can improve contrast, then optimizing vision acuity clarity with fewer distractions. Relieving your eye strains and headache when watch TV or look at smartphones., [Three Levels of Vision]Progressive multifocus glasses for all your need. Top part is half-power magnification for walking, shopping. The middle part is slightly reduced power magnification for working on computer, watching TV, etc. The bottom part of the lens is full-power magnification, then used for nearly distance reading. It means that you can wear the glasses anytime and anywhere., [Notes]It will take some time to adapt after you wearing the multi-focus reading glasses. We suggest you at least try the glasses on for a week, then if there’s anything need our assistance, please contact us., [Services]We stick to pay attention to product quality, if there’s any quality problems please feel free to contact us.