Technical Specs:

• Electro-luminescent backlight
  Auto light switch, afterglow
• 100 Meter Water Resistant.
• Altimeter
  Measuring range: -700 to 4,000 m (-2,300 to 13,120 ft.) without reference altitude
  Measuring unit: 5 m (20 ft.)
  Other: Reference altitude setting
  *Changeover between meters (m) and feet (ft.)
• Barometer
  Display range: 600 to 1,100 hPa/mb (17.70 to 32.45 inHg)
  Display unit: 1 hPa/mb (0.05 inHg)
  Barometric pressure history graph (Graph of 18 hours of pressure readings at 3-hour intervals, which plots rises or falls in pressure that are 3 hPa or greater)
  *Changeover between hPa and inHg
• Depth Gauge
  Measuring range:
  Depth: 0 to 30 m (0 to 98 ft.)*; Elapsed time: 2:59'59"
  Maximum; Water Temperature: -10 to 60°C (14 to 140°F)
  *Note that depths between 0 and 1 meter (0 to 4 feet) are registered as 0.0 m (0 ft.)
  Display unit; 0.1 m (1 ft.)
  Submerged Time: Measured in 1-second increments
  Memory Capacity: 1 log data record (total time submerged, maximum depth, water temperature at maximum depth)
  *Changeover between meters (m) and feet (ft.)
• Thermometer
  Display range: -10 to 60°C (14 to 140°F)
  Display unit: 0.1°C (0.2°F)
  *Changeover between Celsius (°C) and Fahrenheit (°F)
• 1/100-second stopwatch
  Measuring capacity: 23:59'59.99"
  Measuring modes: Elapsed time, split time, 1st-2nd place times
• Countdown timer
  Input range: 1 minute to 24 hours (settable in 1-minutes and 1-hour increments)
  Unit: 1/10 second
  Others: Auto repeat, progress beeper
• Daily alarms
  5 independent daily alarms
• Hourly time signal
• Low battery warning
• Auto-calendar (to year 2039)
• 12/24-hour format
• Regular timekeeping
  Analog: 2 hands (Hour, minutes (hand moves every 20 seconds))
  Digital: Hour, minutes, seconds, pm, month, date, day
• Accuracy: ±15 seconds per month
• Approx. battery life: 2 years on CR1620
• Size of case/total weight
  56.6 X 49.1 X 17.8 mm / 61.7 g