Dial diameter: 40 mm. Polished stainless steel Oyster case. The polished stainless steel Triplock locking crown ensures that the crown is screwed firmly onto the Oyster case like a submarine hatch. Polished stainless steel chronograph pusher with screw-down sleeve. Fixed bezel. Polished black Cerachrom bezel, made of highly durable ceramic, is extremely hard, extremely scratch-resistant, has excellent corrosion resistance, is not affected by UV rays, and will not fade. PVD fills the tachymeter scale engraved on the bezel. Bracelet and Buckle Features: Brushed stainless steel outer link and polished center link. The Oysterlock Double Lock Deployment Clasp features a patented Easylink 5mm extension link. White dial. Applied polished stainless steel hour markers with luminous filling. The minute/second and second fractions are beautifully printed around the perimeter of the dial. Power reserve: 72 hours. Waterproof depth: 100 meters �C 330 feet. Mirror material: Anti-reflective and scratch-resistant sapphire. Clasp Type: Folding Oysterlock with Easylink 5 mm Comfort Extension. Bracelet material: stainless steel. Functions: hours, minutes, seconds and chronograph.