CASIO G - SHOCK Men's Solar Radio Watch GW - 7900B - 1ER Black
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Short Description
CASIO G-SHOCK GW-7900B-1ER — Tough Solar, Multi-Band 6, 200M water-resistant, shock-resistant, and packed with features like tide graphs and world time. Built for extreme durability. Available at YOYOJAPAN Store.
Description
CASIO G-SHOCK Men's Solar Radio Watch GW-7900B-1ER Black
Discover rugged durability and cutting-edge technology with the CASIO G-SHOCK Men's Solar Radio Watch GW-7900B-1ER Black, available now at YOYOJAPAN Store. Built for extreme conditions, this G-SHOCK combines shock resistance, solar charging, and multi-band radio control for unbeatable reliability and performance.
Solar-Powered for Worry-Free Wear
The Tough Solar system ensures that your watch is always charged, using both natural and artificial light sources. Say goodbye to battery changes and enjoy eco-friendly convenience for daily use or outdoor adventures.
Multi-Band 6 Radio-Controlled Accuracy
Stay on time wherever you are. The GW-7900B-1ER automatically synchronizes with six atomic time signals worldwide — including Japan, the US, and Europe — to maintain precise accuracy, day or night.
Extreme Toughness, Classic G-SHOCK Design
With its signature black resin case and bezel, this watch delivers shock resistance, 200M water resistance, and extreme low-temperature operation (-20°C). It's made for sports, military, and adventure — yet stylish enough for daily wear.
Full Feature Set for Everyday and Expedition
Includes world time (48 cities), moon & tide graph, stopwatch, countdown timer, alarms, auto backlight, and full auto calendar. Whether you're tracking tides or timing intervals, it's built for function as well as form.
How to Use
- Charge regularly using sunlight or indoor light.
- Set home city for accurate radio syncing.
- Use dedicated buttons to access world time, stopwatch, or tide data.
- Auto light function activates display with wrist tilt in the dark.
Embrace unbeatable functionality and toughness with the CASIO G-SHOCK GW-7900B-1ER. A dependable tool watch for every lifestyle — available now at YOYOJAPAN Store.
Features
- Tough Solar power: Charges with natural and artificial light.
- Multi-Band 6: Radio-controlled timekeeping worldwide.
- 200M water resistance: Suitable for all water-based activities.
- Shock-resistant: Built to G-SHOCK’s high durability standards.
- Tide & moon graph: Great for surfers and outdoor enthusiasts.
- World time: 48 cities + UTC for global tracking.
- Auto LED backlight: Illuminates with wrist tilt in the dark.
- Extreme temperature resistant: Functions in conditions as low as -20°C.
Q&A
Q1: Is the GW-7900B-1ER solar-powered?
A1: Yes, it features CASIO’s Tough Solar technology that charges using light sources.
Q2: Does this model have atomic timekeeping?
A2: Yes, it uses Multi-Band 6 radio signals for automatic time calibration across the globe.
Q3: Is it waterproof?
A3: Yes, it has 200M water resistance, suitable for swimming, snorkeling, and marine sports.
Q4: Can it show tide and moon data?
A4: Yes, it includes tide graphs and moon phase data — ideal for outdoor and water activities.
Q5: Is it suitable for cold weather?
A5: Yes, it’s built to operate in temperatures as low as -20°C.
Q6: How big is the watch?
A6: The case measures approx. 52.4 × 50.0 × 17.7 mm — large and rugged in classic G-SHOCK style.

