Product Specification: Gender: Men,Women Rim: Full rim Materials: Acetate Shape: Round Frame Weight: 39.49 g RX Range: -20.00~+12.00 PD Range: 54~78 Progressive: YES Spring Hinge: NO Product instruction: (1) Why do we need to filter blue light? ? Blue light from our computers, phones, tablets and other electronic products causes our eyes to not only work harder but puts them at risk of aging faster. ? By wearing blue light blocking glasses, you can limit the amount of blue light that enters your eyes and make your screentime more pleasant. Reduce eye strain, eye fatigue and sensitivity to light during computer term or any other digital time. Protect Your Eyes from macular degeneration and early vision loss, more concentrate on working and learning. ? Voogueme glasses are specially designed to filter out harmful blue light. ? Reduce the symptoms of digital eyestrain Eyestrain, Headaches, sore or tired eyes, and stiff necks are all symptoms of digital eyestrain. Voogueme blue light blocking glasses make screen time more comfortable and help eliminate symptoms of digital eyestrain.? Dimension: Lens Width: 44mm (1.73") , Lens Height: 44mm (1.73") , Bridge Width: 25mm (0.98") , Frame Width: 137mm (5.39") , Arm Length: 150mm (5.91"). ? Using blue light blocking lens, reflect and filter UV, blue light, protect your eyes and reduce eye fatigue, dry and headache during use computer, phone or other electronic product, enjoy a better sleep. ?They are suitable for men and women, suitable for any occasion. ?Classic round glasses frame, wider frame and timeless design give this pair of eyeglasses a vintage look. ?Made from high-quality material, sleek surface, all-day wearing comfort, durability.