Casio AQ230GA-9BVT Watch • Dual time • 1/100-second stopwatch Watch Features World time Dual time Stopwatch 1/100-second stopwatch Measuring capacity: 59'59.99'' Measuring mode: Elapsed time Alarm/hourly time signal Daily alarm Hourly time signal Calendar Auto-calendar (28 days for February) Accuracy Accuracy: ±30 seconds per month Other features 12/24-hour format Regular timekeeping: Analog: 2 hands (hour, minute) Digital: Hour, minute, second, pm, month, date, day