Case / bezel material: Resin / Dark Grey chrome plated Adjustable Clasp Stainless Steel Band 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 (set at 28 days for February) 12/24-hour format Regular time keeping: Hour, minute, second, pm, date, day Accuracy: ±30 seconds per month Approx. battery life: 7 years on CR2016 Size of case : 38.8 x 36.6 x 9.2mm Total weight : 46g