times Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 minute to 60 minutes (1-minute increments) 5 daily alarms Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping World time hour and minute Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) Digital: Hour, minute, second, pm, month, date, day Accuracy: 15 seconds per month Approx. battery life: 2 years on SR927W 2 Size of case / Total weight Size of case: : 50.852.116.9mm Total weight: : 88g