Case / bezel material: Resin Adjustable Clasp Stainless Steel Band Resin Glass Water-Resistant LED backlight 1/10-second stopwatch Measuring capacity: 59’59.9” Measuring modes: Elapsed time Daily alarm Hourly time signal Auto-calendar (28 days for February) Regular timekeeping: Hour, minute, second, pm, month, date, day Accuracy: ±30 seconds per month Approx. battery life: 3 years on CR1616 Size of case / Total weight Size of case: 40.7×32.7×9.2mm Total weight: 53g