Case Diameter: 40 Millimeters

Glass scratchproof sapphire crystal above the dial hardened mineral glass on the caseback

The glowing material can typically be seen for hours

while the Nylon band lasts one year in direct sunlight

Smith Drake Men's Black Frame Gray Mirror ChromaPop Square Sunglasses - 20156480761E3 Material_Plastic Case Diameter: 40 MillimetersSmith Drake Men's Black Frame Gray Mirror ChromaPop Square Sunglasses 20156480761E3. The Drake's contours and relief surfacing provide a unique update to this classic 6 base design. The Italian craftsmanship is complemented with out of sight hinges and megol nose and temple pads for an unsurpassed fit and finish. Techlite glass and ChromaPop polarized lenses provide the highest levels of enhanced color and clarity while also offering unparalleled