Dial diameter: 40 mm. Monobloc middle case, screw-down case back and winding crown. Fixed bezel, engraved tachymeter. Screw-down crown. Triple interlocking triple waterproof system. Scratch resistant sapphire crystal. Water resistant to 100 meters/330 feet. Permanent mechanical self-winding movement. Functions: central hours, minutes and seconds, small seconds at 6 o’clock. Chronograph (centre hand) accurate to within 1/8 of a second, 30-minute counter at 3 o’clock and 12 hours at 9 o’clock. 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.