Frameless reading glasses round shape: lens width 54 mm (2.13 in), frame width 123 mm (4.84 in), lens height 45 mm (1.77 in), bridge 14 mm (0.55 in), bow length 142 mm (5.59 in). Weight 12 g (0.03 lb). Frame material: high-quality edge. Oval reading glasses small size: resin lenses, PC TR90 frame. Available in 3 colours: red, brown, champagne. Diopters available: 0, +1.0, +1.5, +2.0, +2.5, +3.0, +3.5, +4.0. Blue light filtering reading glasses: reduces blue light from computers, smartphones and TV. UV400 protective coating blocks 99.9% of UV rays for better sleep. Flexible computer glasses with spring hinges: adjustable spring hinges allow the temples to open 30 degrees for a smoother closure. Protect your eyes while keeping your look stylish. Use scenarios: - Reading at desk or on the sofa for extended periods. - Prolonged computer or device use to reduce eye strain. - Travel or commuting where you need comfortable, reliable vision.