Case Back Screw-down case back. Dimension 44 mm. Glass Sapphire with several layers of anti-reflective coating. Material Stainless Steel. Shape Round. Specificities: Screw-in crown. Rotating unidirectional bezel. Water Resistance 300 meters. Bracelet Buckle With double security folding clasp and integrated diving extension. Bracelet Material Stainless Steel. Dial Colour Blue. Hour Markers Applied indexes with Super-LumiNova. Main Functions Hours, minutes, seconds, and date. End of Life feature. Caliber 157. Movement Quartz. 2 years warranty.