Case / bezel material: Resin / Black chrome plated Adjustable Clasp Stainless Steel Band Resin Glass Gray ion-plated band Water Resistant Electro-luminescent backlight 1/100-second stopwatch Measuring capacity: 59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Daily alarm Hourly time signal Auto-calendar (28 days for February) 12/24-hour format Regular timekeeping: Digital: Hour, minute, second, pm, date, day Accuracy: ±30 seconds per month Approx. battery life: 7 years on CR2016 Size of case: 38.6×36.3×9.6mm Total weight: 49g