The Casio G-SHOCK GW-7900B-1ER is a men's solar-powered radio-controlled analog-digital watch built around the shock-resistant Tough Solar platform in a black resin case and band. The G-SHOCK line was introduced by Casio in 1983 with the goal of creating a watch that could survive extreme impact, and the 7900 series carries that heritage into a marine-oriented sport design.
Key Features:
- Shock Resist structure absorbs drops and knocks so the watch keeps working through daily wear and outdoor use.
- Tough Solar charging system converts light into power, so you avoid battery replacements and the watch keeps running in low-light conditions.
- Multi-band radio wave reception picks up time signals automatically up to 6 times per day, or on manual command, keeping the time accurate without adjustment.
- Moon data display shows the current moon phase and shape, useful for planning night activities and outdoor sessions.
- Tide graph indicates tide movement at your home location, helpful for surfing, fishing, and coastal activities.
- Two 1/100-second stopwatches and a 1,000-hour countdown timer support long training sessions and extended events.
- World time covers 48 cities across 29 time zones with a daylight saving setting, useful when traveling.
- 20 ATM water resistance allows swimming and water sports without concern about splashes or immersion.
Specifications:
- Brand: Casio G-SHOCK
- Model: GW-7900B-1ER
- Movement: Tough Solar, radio-controlled
- Received signals: JJY 40kHz/60kHz (Japan), WWVB 60kHz (North America), MSF/DCF77 60kHz/77.5kHz (Europe), BPC 68.5kHz (China)
- Water resistance: 20 ATM
- Case size: approx. 52.4 x 50.0 x 17.7 mm
- Weight: approx. 71 g
- Band: black resin
Best for: outdoor enthusiasts, surfers, anglers, and travelers who want an impact-resistant solar watch that maintains accurate time worldwide.
Shipping:
- Ships from Japan with tracking.