Casio tachymeter black dial

Case size (L× W× H) 51 × 49.3 × 14.1 mm Weight 197 g Case and bezel material Stainless steel Band Double-lock, 1-press, 3-fold Clasp Stainless Steel Band Solid Band Water resistance 100-meter water resistance Power supply and battery life Approx. battery life: 5 years on SR927W Glass Mineral Glass / Spherical Glass Crown Screw Lock Crown Back plate Screw Lock Back Bezel features Tachymeter Retrograde dial Surface treatment Partial ion plated Stopwatch 1-second stopwatch Measuring capacity: 4:59'59 Measuring mode: Elapsed time Accuracy Accuracy: ±20 seconds per month Other features Regular timekeeping: Analog: 3 hands (hour, minute, stopwatch seconds), 3 dials (timekeeping second, stopwatch hours, stopwatch minutes) Day and date display