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: ?ñ30 seconds per month Approx. battery life: 7 years on CR2016 Size of case : 38.6??36.3??9.6mm Total weight : 49g