Technical Specs:

• 100 meter water resistant
• Shock Resistant
• Multi illuminator (Multi Color LED backlight) and Afterglow.
• A Dolphin can be seen floating on the screen when the backlight is on
• Memory Function: Memory capacity up to 25 sets of data, each set including Name (8 characters) and telephone number (12 digits), plus Auto-sort
• Dual Time
• Day Counter: Automatically counts down the days from the current date to a target date.
  Memory capacity: 5 records (8 characters each)
  A mark appears on the display to let you know when a target date is reached. 
• 1/100 second stopwatch
  Measuring capacity: 23:59'59.99"
  Measuring modes: Elapsed time, split time, 1st-2nd place times 
• 5 Independent Daily Alarms
• Hourly Time Signal
• Auto calendar to year 2039
• 12/24 hour format
• Regular timekeeping: Hour, minutes, seconds, am/pm, month, date, day
• Daylight saving on/off
• Accuracy: ±15 seconds per month 
• Approx. battery life 3 years on CR 1620