Case / bezel material: Resin / Black chrome plated Adjustable Clasp Stainless Steel Band Resin Glass Gray ion plated band 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