Casio Edifice EF-550PB-1AV

1/20-second chronograph Tachymeter Retrograde 100-meter water resistance Stainless steel case Face design in the image of the engine cover Partial ion plated Retrograde dial Mineral Glass Tachymeter Screw Lock Crown Screw Lock Back 100-meter water resistance Case / bezel material: Stainless steel Resin Band 1/20-second stopwatch Measuring capacity: 59'59.95'' Measuring mode: Elapsed time Date display Regular timekeeping Analog: 3 hands (hour, minute, stopwatch seconds) 3 dials (timekeeping 24-hour, timekeeping second / stopwatch 1/20 second, stopwatch minutes) Accuracy: 20 seconds per month Approx. battery life: 2 years on SR927W Size of case: 50.8 45.1 12.1 mm Total weight: 100 g