Feature:1. 1BLUE BLOCKING: Effective in filtering digital blue light, and reduce eye fatigue, headache, glare, and dry eyes. It is functional when overexposed to hazardous ultraviolet rays from TV, video, pc, cell phone, or other digital screens.2. 2PHOTOCHROMIC: Two-color electroplating processing makes the lens change colors automatically when under the sunlight and UV-rays(based on the ), so as to serve as a pair of sunglasses.3. 3EXQUISITE WORKMANSHIP: Lightweight and flexible nose pad and temple design allow on the nose and the ears; Low color difference, high light-transmittance, and high definition.Specification:Description:Effectively stays your cherished eyes away from harmful blue lights caused by computers, PCs, laptops, TVs, phones, tablets, etc. The photochromic lens efficiently keeps your eyes from light interference.Features:BLUE BLOCKING: Effective in filtering digital blue light, and reduce eye fatigue, headache, glare, and dry eyes. It is functional when overexposed to hazardous ultraviolet rays from TV, video, pc, cell phone, or other digital screens.PHOTOCHROMIC: Two-color electroplating processing makes the lens change colors automatically when under the sunlight (based on the ), so as to serve as a pair of sunglasses.EXQUISITE WORKMANSHIP: Lightweight and flexible nose pad and temple design allow on the nose and the ears; Low color difference, high light-transmittance, and high definition.FASHIONABLE: Half-frame with cat-like ears design fits well with different face shapes, and suitable for both men and women.NOTICE:Place your glasses with the lens facing upwards, otherwise, the lens may be damaged.When glasses are dirty, use eyeglass cleaner or a neutral detergent to rinse them softly, and it is recommended to to an optician regularly for professional cleaning.Rinse the glasses with a tap and apply 2 small drops of detergent on each lens. Then rinse them off gently with water.Do not use something like a hairdryer to heat your glasses or put them in a hot place, as this may cause them to break.Don't use the cloth to wipe the glasses directly, in that the cloth is for dust-proof use.Specifications:Item Name: Blue Light Blocking GlassesMaterial: AlloyColor: Gold/Silver/Black(optional)Size: Glasses : 135*146*45mm/5.3"*5.7"*1.8"Package: 150*50*20mm/5.9"*2"*0.8"G.W: Approx.15g/0.5ozNotes:1. Size information is just for reference only, please allow 1-2cm (0.4-0.8") differences due to manual measurement, thanks.2. Item color displayed in photos may be showing slightly different on your monitor since monitors are not calibrated the same.Package List:1* Blue-Light Blocking Glasses(1 Pair)Package List:1* Blue-Light Blocking Glasses(1 Pair)