Casio G-Shock G-7900-2DR

This professional product description is designed for the G-7900 series, a high-performance digital powerhouse engineered for extreme sports and rugged marine environments.

Product Overview

From G-SHOCK, the brand that redefined personal timekeeping toughness, comes a certified best-seller designed for those who live life on the edge. The G-7900 series is built to be the ultimate partner for rough and rugged activities, featuring a distinct six-section case design reinforced by four large bezel screws for maximum impact protection.

Whether you are navigating the high seas or enduring freezing alpine altitudes, this model delivers. It features low-temperature resistance down to -20°C and specialized data for marine enthusiasts, including Tide and Moon graphs. With some of the largest buttons available in the G-SHOCK lineup, operability is effortless even when wearing gloves, while the high-contrast, sectioned LCD ensures vital data is always readable at a glance.

Major Features

• Extreme Durability: Built to withstand intense shocks, impacts, and the rigors of professional extreme sports.

• Marine Intelligence: Equipped with a Tide Graph and Moon Data, providing essential environmental tracking for surfing, fishing, and boating.

• Low-Temperature Resistance: Reliable operation in freezing conditions as low as -20°C (-4°F).

• Dual 1,000-Hour Stopwatches: Two independent 1/100-second stopwatches allow for simultaneous timing of complex events with massive measuring capacities.

• Tactical Operability: Large, oversized buttons and an Auto EL Backlight with a 5-second afterglow for superior usability in any environment.

• 20-Bar Water Resistance: Engineered for high-pressure water activities, including swimming, snorkeling, and surfing.

Technical Specifications

Basic Information

• Case Size (L× W× H): 52.4 × 50 × 17.7 mm

• Weight: 68.2 g (Engineered for a secure, comfortable fit during movement)

• Material: Durable Resin case, bezel, and band

• Construction: Shock Resistant; Low-temperature resistant (-20°C)

• Power Supply: Approx. 2-year battery life on CR2025

• Glass: Tough Mineral Glass

Watch Features

• Marine Data: Moon age/phase graph and Tide level graph for specific dates and times.

• World Time: 29 time zones (48 cities) with daylight saving on/off.

• Dual Stopwatches: Two 1/100-second stopwatches with 999:59'59.99'' capacity and 5-second countdown auto-start.

• Countdown Timer: 24-hour range with auto-repeat and progress beeper.

• Alarms: 5 multi-function alarms (including 1 snooze alarm) and hourly time signal.

• Flash Alert: Backlight flashes with buzzer for alarms, timer signals, and stopwatch auto-start.

• Illumination: Blue-Green Electro-luminescent backlight with Auto Light switch and selectable duration (3 or 5 seconds).

• Accuracy: ±15 seconds per month.

Rugged Design and Versatility

The Master of Operability

The G-7900 is defined by its industrial aesthetic. The protruding surfaces and large screws are not just for show; they provide a physical barrier against lateral impacts. The "Grip" textured buttons ensure that even with wet hands or heavy gear, you never lose control of your timing.

Comprehensive Information Display

The large LCD is intelligently divided into dedicated sections. You can view the time, date, tide levels, and moon phases simultaneously, making it an indispensable tool for marine leisure and outdoor professionals who need data fast.