Casio G-SHOCK 7900 Series a Digital Watch

This is the Casio G-SHOCK 7900 Series a Digital Watch

Features

• Case size - (L× W× H) 52.4 × 50 × 17.7 mm
• Weight - 68.2 g
• Case / bezel material -  Resin
• Band - Resin Band
• Construction - Shock Resistant
• Water resistance - 200-meter water resistance
• Environmental resistance - Low temperature resistant (-20℃)
• Power supply and battery life - Approx. battery life: 2 years on CR2025
• Glass - Mineral Glass

World time
29 time zones (48 cities), daylight saving on/off
Moon data
Moon data (moon age of the input data, moon phase graph)
Tide graph
Tide graph (tide level for specific date and time)
Stopwatch
1/100-second stopwatch (ST1)
Measuring capacity: 999:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Other: 5-second countdown auto start
1/100-second stopwatch (ST2)
Measuring capacity: 999:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Timer
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
Alarm/hourly time signal
Hourly time signal
5 multi-function alarms (with 1 snooze alarm)

Flash alert feature
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
Light
Electro-luminescent backlight
Auto light switch, selectable illumination duration (3 seconds or 5 seconds), afterglow
Light color
EL:Blue Green
Calendar
Full auto-calendar (to year 2099)
Mute feature
Button operation tone on/off
Accuracy
Accuracy: ±15 seconds per month
Other features
12/24-hour format
Regular timekeeping:
Hour, minute, second, pm, month, date, day

From G-SHOCK, the watch that brought unmatched toughness to personal timekeeping, comes a collection of models that deliver a level of protection. These watches are designed and engineered to become partners of people who like their activities rough and rugged.
Major features include four large bezel screws and protruding surfaces that divide the form of the watch into six sections for a fashionable design. Buttons are among some of the largest available in the G-SHOCK lineup for easy operation.
Low-temperature resistance allows operation even under very cold conditions, while moon and tide graphs provide essential information for marine leisure enthusiasts. A large LCD is divided into sections for that make information easy to locate and read whenever you need it.