Casio Vintage A159WAD-1DF Diamond Series Specifications: Case / bezel material: Resin / Chrome plated Adjustable Clasp Stainless Steel Band Cut Glass Resin Glass Natural diamonds Water Resistant 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 (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