CRGATV 3 Pack Reading Glasses Blue Light Blocking Computer/TV/Reading Round Glasses,Lightweight Spring Hinge Readers For Man and Woman Anti Blue Ray Filter Blue light blocking glasses can effectively reduce the continuous damage of blue light to the eyes.After using anti-blue light glasses,the intensity of blue light emitted by mobile phones,computers and other screens is effectively suppressed,reducing the damage of harmful blue light to the eyes. Color:Black,Tortoise,Blue Tortoise Material:Plastic Frame,AC Lens,Spring Hinge Diopter available: 0 +1.0 +1.5 +1.75 +2.0 +2.5 +3.0 +3.5 Package includes:3 x Reading Glasses + 3 x Pouches Please specify the frame color and lens strength when pay for this.Thanks! Note:Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thank you! Size for manual measurement,there may be a 0 to 0.5 cm error,belongs to the normal phenomenon. Products can replace free within 90 days after sale if it cannot use due to the quality problems in the precondition of non-artificial damage.Customer satisfaction is always the driving force of our progess.