The Casio G-SHOCK G-7900A-4DR-S is a rugged digital watch engineered for extreme outdoor and marine environments. Featuring a striking red resin case and band, this model offers G-SHOCK's legendary shock-resistant construction along with 200-meter water resistance. Designed with sailors, surfers, and outdoor enthusiasts in mind, it includes Moon Data, Tide Graph, low-temperature resistance, and a large high-contrast display for excellent readability in demanding conditions. Official specifications are based on Casio's official product documentation.
Key Features
Shock Resistant
Low Temperature Resistant (-20°C)
200-meter water resistance (20 Bar)
Moon Data
Tide Graph
Super Auto LED Backlight
World Time
1/100-second stopwatch
Countdown timer
5 independent daily alarms
Full auto-calendar (to 2099)
12/24-hour time formats
Flash Alert for alarms and countdown timer
Timekeeping
Displays:
Hour
Minute
Second
Day
Date
Month
Digital time display
World Time (48 cities / 31 time zones + UTC)
Moon age and moon phase display
Tide Graph
12/24-hour time formats
Full auto-calendar (to 2099)
Accuracy: ±15 seconds per month
Design & Materials
Red resin case
Red resin bezel
Red resin band
Buckle closure
Mineral glass
Shock-resistant construction
Low-temperature resistant to -20°C
Large front buttons for easy operation
Protective button guards
High-visibility LCD display
Colors
Case: Red
Bezel: Red
Band: Red Resin
Display: Gray LCD
Button Accents: Silver-tone
Note: The G-7900A-4DR-S is part of the G-7900 series, specially developed for marine sports and harsh outdoor conditions. Its Tide Graph, Moon Data, and low-temperature resistance make it an excellent companion for surfing, fishing, sailing, camping, and winter activities.
Power
Battery Type: CR2025
Approximate Battery Life:2 Years
Water Resistance
200 meters (20 Bar)
Suitable for:
Daily hand washing
Showering
Swimming
Snorkeling
Recreational scuba diving
Marine sports and water activities
What's Included
Casio G-SHOCK G-7900A-4DR-S Watch
Original Casio Box
Instruction Manual
Warranty Card (provided by the authorized distributor)
