Color: Black, Black-Red Frame Material: PC Style: Fashion, Classic Lens Technology: Blue Light Blocking, Progressive Multifocal Lens Material: Resin Magnification Strength: Strength 1.0x ~ 4.0x Type: Progressive Multifocal Reading Glasses -What are progressive multifocal reading glasses? Asymptom multifocal glasses are the upper optical area of the lens used to look at distance and the lower optical area used to look at things up close. The degree in the middle changes gradually, which used to look at the intermediate. Most people who wear progressive multifocal glasses need about a week of adaptation, but the adaptation period varies from person to person; they slow down when feel dizzy. When going down the stairs, please lower your glasses and use the top area. You will feel safe and comfortable. Product Size: Total Width: 137mm (5.39inch) Lens Width: 52mm (2.05inch) Lens Height: 42mm (1.65inch) Bridge Width: 16mm (0.63inch) Temple Length: 135mm (5.31inch) Weight: 21.6g (0.76oz) Package contents: 1 x Reading Glasses Note: 1. There is 2-3% difference according to manual measurement. Please check the size carefully before you buy the item. 2. Please note that slight color difference should be acceptable due to the light and screen._QUDD