Case / bezel material: Resin / Chrome plated Stainless Steel Band Adjustable Clasp Resin Glass Water Resistant LED light 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 (auto calendar set at 28 days for February) 12/24-hour format Regular timekeeping: Hour, minute, second, pm, date, day Accuracy: ?ñ30 seconds per month Approx. battery life: 5 years on CR1616