The GMW-B5000 series is the all-stainless evolution of the original 1983 DW-5000 G-Shock. Launched in 2018 (GMW-B5000D) and expanded with the lightweight titanium GMW-B5000TB and gold-IP variants. Tough Solar, multi-band radio time sync, Bluetooth phone connection for app-based timekeeping, sapphire crystal on later runs.
Pricing in 2026: ~EUR 500 for the GMW-B5000D-1 (silver), ~EUR 1000+ for gold variants and limited editions like the GMW-B5000PS.
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Verify firmware can pair with the current Casio Watches app on iOS and Android; very old stock may need a service-centre update. Check bracelet links are tight and that the case back screws are not stripped (common on units that have been opened for battery service).
Solar charge is permanent; if the watch shows "C" or "L" on the indicator, leave it in sunlight for a few hours and re-test before assuming a fault.