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Specifications:
Index:1.61
Material:Resin
Vision Effect:Photochromic
Abrasion Resistance:6-10H
Color:Gray/ Brown/Blue/pink
Abb:42
Diameter:65/70/75mm
Coating:HC/HMC/EMI/UV
Single vision:(SPH:0.00~+-6.00 CYL:0.00~-4.00)

Photochromic lenses are optical lenses that darken on exposure to specific types of light of sufficient intensity, most commonly ultraviolet (UV) radiation. In the absence of activating light the lenses return to their clear state. Photochromic lenses may be made of resin, glass, polycarbonate, or another plastic. They are principally used in sunglasses that are dark in bright sunlight, but clear in low ambient light conditions. They darken significantly within about a minute of exposure to bright light, and take somewhat longer to clear.

Advantages:
1.Color changing (darkening) in highest speed than other lenses (Depth up to 90%)
2.Color fading (returning to the clear state) in highest speed than other lenses (90% within 4 minutes)
3.The ground color (base color) is more light.
4.Color depth can be kept up to 70% at high temperature.
5.More than two years in anti-aging.
6.Various physical properties and indexes all surpass the international standards (coating adhesion, anti-scratching, hardness, etc.) 
7.100% high UV protection.
8.Anti-reflection, high abrasion resistance, high stain resistance, waterproof

    
Payment& Shipping Terms:
Port:FOB Shanghai
MOQ:300Pairs
Supply Ability:3000Pairs per day
Payment Term:
A.30% deposit by T/T within 7 working days after signing S/C, balance prior to shipment. 
B.L/C is also acceptable.

Packing:
envelops ( as per buyer's requirements):
1. Packing in inner new white paper envelops with outer carton with inner small cartons inside.
2. Extra charges needed if buyer ask for your own design.