Specifications Scuderia AlphaTauri Limited Edition Screw Lock Back Mineral Glass 100-meter water resistance Case / bezel material: Stainless steel One-touch 3-fold Clasp Stainless Steel Band 1-second stopwatch Measuring capacity: 9'59 Date display Regular timekeeping Analog: 3 hands (hour, minutes, second), 3 dials (stopwatch minutes, stopwatch seconds, 24-hour) Accuracy: ±20 seconds per month Approx. battery life: 3 years on SR920SW Size of case : 51 X 47.1 X 11.7 mm Total weight : 146 g