The Casio Wave Ceptor Watch WVA-109HDU-2BVER uses Wave Ceptor technology which is the most powerful tool you will ever wear on your wrist and ensures absolute accuracy to the second.

• Water resistance: 100 m
• World time: 29 time zones (30 cities), city code display, daylight saving on/off
• 1/100 sec stopwatch
• 5 daily alarms: 3 one time alarms, 1 target alarm and 1 snooze alarm
• Time countdown display (target alarm only)
• Electro-luminescent backlight
• Afterglow
• Time calibration signals: Station name: MSF (Rugby, England), Frequency: 60.0 kHz, Range: 1500 km, Other: Transmitter selection, Station name: DCF77 (Mainflingen, Germany), Frequency: 77.5 kHz, Range: Approx. 1500 km
• Date alert: 5 reminders for important dates (mark flashes on the display)
• Time recorder: Memory for 30 records, each containing month, day, hour and minutes, Memory for 30 records, each containing hour, minutes, seconds. am/pm and standard time/daylight saving time
• Time calibration signal reception: Auto receive (0:00 am, 1:00 am, 2:00 am, 3:00 am, 4:00 am and 5:00 am)
• Auto-calendar to year 2039
• 12/24 hour format