Casio G-Shock C3 Digital Men's Watch G-8100B-9

Model: G-8100B-9 G8100B 9 G8100B9

• Shock resistant (G-SHOCK)
• Electro-luminescent backlight
Auto light switch, dual illuminator, afterglow
• Flash alert
Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm, countdown timer progress beeper, and stopwatch auto start
• World time
29 time zones (48 cities), city code display, daylight saving on/off
• 1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Other: 5-second countdown auto start
• 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)
Others: Auto-repeat, progress beeper
 • Multi-function alarms
3 independent multi-function alarms (2 one-time alarms and 1 snooze alarm)
• Hourly time signal
• Full auto-calendar (to year 2099)
• 12/24-hour format
• Button operation tone on/off
• Regular timekeeping: Hour, minute, second, pm, month, date, day
• Accuracy: ±15 seconds per month
• Approx. battery life: 5 years on CR2016
• Size of case / total weight
43.6 X 39.8 X 13.9 mm / 59 g