Casio Watch G - Shock Wireless Solar GAW - 100 B1A2JF Men's, Black & Blue

The Casio G-Shock GAW-100B-1A2JF is designed for modern men who demand durability, performance, and rugged aesthetics—all wrapped in a bold black-and-blue colorway. Combining G-Shock’s legendary shock resistance with wireless solar charging and Multi-Band 6 atomic timekeeping, this timepiece is engineered for both extreme environments and everyday wear.

Why Choose the Casio GAW-100B-1A2JF?

Tough Solar Charging + Multi-Band 6 Accuracy
This model delivers reliable, eco-conscious power with Casio’s Tough Solar technology. It harnesses sunlight and indoor light to keep your watch running without ever needing a battery change. At the same time, Multi-Band 6 radio signal reception means your time is automatically synced with atomic clocks around the globe—ensuring second-perfect precision.

Bold Aesthetics with Maximum Readability
The GAW-100B-1A2JF features a striking black case with vivid blue highlights on the dial and hands. The layered analog-digital display offers high visibility, while the oversized case design gives it a rugged, masculine presence that stands out without being flashy.

Legendary G-Shock Shock Resistance
G-Shock is synonymous with durability, and this model is no exception. Engineered to survive drops, shocks, and harsh environments, the GAW-100B-1A2JF is ideal for athletes, military personnel, outdoor adventurers, and anyone who values gear that won't let them down.

Key Features of the GAW-100B-1A2JF

Multi-Band 6 Radio-Controlled Timekeeping

Stay in sync anywhere on Earth. The GAW-100B-1A2JF receives automatic time calibration signals from six radio towers across Japan, the U.S., the U.K., Germany, and China. No need to set or adjust time manually—it’s done for you, even while you sleep.

Tough Solar Power System

A built-in solar panel powers the watch by converting both natural and artificial light into energy. A full charge provides up to 7 months of operation—even without exposure to light. There’s also a power-saving mode that kicks in when the watch is left in the dark.

Dual Display: Analog & Digital

The analog hands are paired with digital sub-displays that show time, date, and other functions. This hybrid layout ensures you get the best of both worlds—quick glances for time checks, plus deeper data when needed.

World Time Function

Ideal for jet-setters and global professionals. This model supports World Time in 48 cities across 31 time zones, letting you track another location's time alongside your home time.

Auto LED Light

Visibility is never an issue. The watch includes an Auto LED backlight that activates with a tilt of your wrist in dim lighting. You can also switch it on manually with a button press.

Additional Features That Enhance Everyday Use

5 Daily Alarms

Stay on top of your schedule with five programmable alarms. Set one for wake-up, one for meetings, another for workouts—you decide.

Stopwatch & Countdown Timer

Track workouts, laps, or tasks with the 1/100-second stopwatch. The countdown timer is great for cooking, training, or timing any activity where precision matters.

Full Auto Calendar

The calendar is pre-programmed until the year 2099, automatically adjusting for months and leap years. You won’t have to worry about setting it again.

12/24-Hour Formats

Choose the time display that suits your lifestyle—standard 12-hour or 24-hour military time.

Water Resistant to 200 Meters

This G-Shock is built for water as well as land. It’s safe for swimming, snorkeling, and most water sports. Whether you’re caught in the rain or diving into the deep end, the GAW-100B-1A2JF can handle it.

Comfort and Design

Resin Case & Band for Lightweight Durability

The black resin band is flexible, strong, and comfortable to wear all day. It resists scratches, temperature fluctuations, and sweat—perfect for active use.

Oversized 52.5mm Case

Big and bold, the 52.5mm case size gives it a strong wrist presence without feeling overbearing. It suits casual and sporty outfits perfectly, with a masculine silhouette that makes a confident statement.

Blue Accents for Modern Style

The vivid blue hands and hour markers contrast beautifully with the matte black case and dial, giving it a sleek but tough appearance. The color combo is eye-catching yet versatile enough for daily wear.

How to Use Your GAW-100B-1A2JF Watch

Time Adjustment (Auto & Manual)
Time is auto-set using radio signals. However, you can manually adjust the time using the side buttons if you’re in an area without signal coverage. The digital screen guides you through each step.

Switching Between Modes
Pressing the lower-left button cycles between modes—World Time, Stopwatch, Timer, Alarms, and back to regular timekeeping. Simple, intuitive navigation with no learning curve.

Charging the Watch
Expose it to sunlight or strong indoor lighting for a few hours regularly. No need for special maintenance—just wear it, and it charges on its own.

What’s Inside the Box?

The GAW-100B-1A2JF arrives ready to wear, presented in a sturdy G-Shock box that makes it ideal for collectors or gifting.

• 1 × Casio G-Shock GAW-100B-1A2JF Watch

• 1 × Instruction Manual (Japanese print; English PDF available)

• 1 × Official G-Shock Watch Box

• 1 × Warranty Card (Japan Domestic Warranty)

Everything is securely packed to ensure the watch reaches you in perfect condition.

Care Tips & Maintenance

Cleaning
Wipe the watch with a soft cloth regularly to remove sweat and dust. For a deeper clean, use a slightly damp cloth and mild soap on the band. Avoid harsh chemicals.

Solar Charging Maintenance
Leave your watch in a well-lit area when not wearing it. Even ambient indoor lighting helps maintain the charge. Outdoor sunlight is best for optimal battery health.

Water Protection Tips
Though water resistant to 200 meters, it’s best to rinse the watch with fresh water after saltwater or chlorinated exposure. Never press buttons underwater to prevent leaks.

Final Thoughts: A Timepiece Built for Action and Style

The Casio G-Shock GAW-100B-1A2JF isn’t just another watch—it’s a functional tool and a bold fashion statement rolled into one. With solar power, atomic timekeeping, rugged construction, and a standout color design, it’s crafted for those who lead active, dynamic lives.

Whether you’re hiking, working, or hitting the gym, this watch is more than ready to keep pace. For men who demand reliability and modern tech in their wristwear, the GAW-100B-1A2JF is a clear winner.