Color: Black, Black-Red Frame Material: PC Style: Fashion, Classic Lens Technology: Blue Light Blocking, Progressive Multifocal Lens Material: Resin Magnification Power: Power 1.0x ~ 4.0x Type: Progressive Reading Glasses -What are progressive multifocal reading glasses? Asymptotic multifocal glasses are the upper optical area of the lens used for distance vision and the lower optical area used for close vision. The degree of the middle gradually changes, which is used for viewing the intermediate range. Most people who wear progressive multifocal glasses need about a week of adaptation, but the adaptation time varies from person to person; they go slower when they feel dizzy. When you go down, don't hesitate to lower your glasses and use the upper area. You will feel safe and comfortable. Product Size: Total Width: 137mm (5.39in) Width of the frame: 52mm (2.05in) Height of the frame: 42mm (1.65in) Bridge width: 16mm (0.63in) Temple length: 135mm (5.31in) Weight: 21.6g (0.76oz) Package includes: 1 x Reading glasses Note: 1. There is 2-3% difference according to manual measurement. Please check the size carefully before purchasing the item. 2. Please note that slight color difference should be acceptable due to the light and screen.