Blue light blocking: Cut 85% blue light, reduce eyestrain and enjoy a better sleep Anti sunlight: Photochromic brown sunglasses help you to care of eyes (outdoor activities) Almost clear lens: Lens with little yellow tint, no impact the electronic screen color Frame feature: Only 11g, super lightweight, flexible and durable Warranty: we attach great importance to customer experience, if you have any question, please contact us, we will provide you with excellent service Product description Enjoy clear eyes and reduce headaches with blue light blocking glasses and photochromic sunglasses designed for reading, biking, and other outdoor activities. Product Details: Blue light blocking reading glasses HD clarity anti-glare lenses Photochromic gray lenses Lightweight, comfortable frame Multi-magnification choice Gender neutral (men and women) Order Includes: Yein eyeglasses Soft cleaning cloth Glasses case Silicone ear hooks Small screwdriver Blue light blocking test tools Attention: When wearing glasses, please hold the temples with both hands When not in use with lens cloth, the lens up and placed in a special bag, beware of the lens and the frame is scratched by hard objects. Frames or lenses contaminated with dust, sweat, grease, cosmetics, etc. Please use a mild detergent warm water, then dry with a soft cloth. Prohibit prolonged exposure to water, soaked in water and placed in a fixed place by the sun exposure; prohibit the prolonged exposure to current, metal edge.