The new navy CA53WF-2B Casio Calculator Watch feature a simple and stylish design that will suit any outfit. It contains a compact eight-digit calculator for your daily calculating needs. This watch beeps every hour on the hour, to help you keep track of time. This eight-digit calculator watch has a stopwatch that includes three measuring modes such as elapsed time, split time, first and second-place times. You can even set a daily alarm using this Casio watch. Specifications Case / bezel material: Resin Resin Band Water Resistant Dual time 8-digit calculator 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Daily alarm Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Regular timekeeping: Hour, minute, second, am/pm, year, month, date, day Accuracy: ±15 seconds per month Approx. battery life: 5 years on CR2016 Module: 3208 Size of case : 43.2 × 34.4 × 8.2mm Total weight : 25g