Casio G-Shock Ana-Digital GA100BT-1A

• Shock Resistant
• Magnetic Resistant
• 200 Meter Water Resistant
• Auto LED Light with Afterglow
• World Time
  29 times zones (48 cities + UTC), daylight saving on/off, home city/world time swapping
• 4 Daily Alarms and 1 Snooze Alarm
• Hourly Time Signal
• 1/1000 Second Stopwatch
  Measuring capacity: 99:59'59.999"
  Measuring modes: Elapsed time, lap time, split time
  Others: Speed (0-1998 units/hour), Selection distance input (0.0-99.9)
• Countdown Timer
  Measuring unit: 1 second
  Countdown range: 24 hours
  Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
  Other: Auto-repeat
• Full Auto-Calendar (pre-programmed until the year 2099)
• 12/24 Hour Formats
• Accuracy: +/- 15 seconds per month
• Battery: CR1220
• Approx. battery life: 2 years
• Module 5081