From the Essentials Collection Chronograph measures up to 60 minutes of elapsed time in 1/5-second increments Black tachymeter dial ring Black dial Bold silver subdials at 3 and 9 o’clock styled to suggest a racecar instrument panel 24-hour subdial Date calendar Case diameter: 41.5mm Stainless steel case and bracelet with mirror and hairline finish Tri-fold push button release clasp Water resistant to 10 bar, 100 meters (330 feet) Caliber 8T63