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 have the upper optical area of the lens used for distance vision and the lower optical area used for close vision. The power in the middle gradually changes, which is used for intermediate distance vision. Most people who wear progressive multifocal glasses need about a week to adjust, but the adjustment time varies from person to person; it is slower when they feel dizzy. When going downhill, please lower your glasses and use the upper area. You will feel safe and comfortable. Product Size: Total Width: 137mm (5.39in) Frame Width: 52mm (2.05in) Frame Height: 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.