Resin Glass Water Resistant Case / bezel material: Resin Resin Band LED light 1/100-second stopwatch Measuring capacity: 59'59.99 Measuring modes: Net time, split time, 1st-2nd place times Daily alarm Hourly time signal Auto-calendar (28 days for February) 12/24-hour format Regular time keeping: Hour, minute, second, pm, date, day Accuracy: ?ñ30 seconds per month Approx. battery life: 7 years on CR2016 Size of case : 38.8??29.8??8.1mm total weight: 44 g. Measuring mode: Elapsed time.