Introduction This Casio G-SHOCK G-STEEL GST-B100 embodies the fusion of advanced technology and rugged design that defines the G-SHOCK brand. Equipped with Tough Solar charging, Bluetooth connectivity, and a durable shock-resistant structure, it combines digital precision with analog sophistication — a modern tool watch built for any challenge. Historical & Collector Value The G-STEEL series was introduced as a premium evolution of the classic G-SHOCK, integrating stainless-steel components for a more refined, urban aesthetic without sacrificing toughness. The GST-B100, part of this innovative line, is notable for being one of the first G-SHOCKs to feature Bluetooth smartphone connectivity with analog chronograph functionality. It remains highly sought after by collectors and G-SHOCK enthusiasts for its combination of cutting-edge technology and mechanical appeal. Specifications • Brand: Casio • Model: G-SHOCK G-STEEL Bluetooth Tough Solar Chronograph • Reference number: GST-B100 • Movement: Solar-powered quartz with Bluetooth connectivity • Case material: Stainless steel with resin shock-absorbing structure • Strap material: Black resin band • Case size: Approx. 53 mm (including bezel) • Water resistance: 200 meters (20 bar) • Functions: • Analog time display • Chronograph • World time • Alarm and countdown timer • Date display • Bluetooth smartphone link • Solar charging • Accessories: None (watch only) Condition The watch is in excellent overall condition, showing minimal wear. The dial and crystal are clean and scratch-free. All functions, including Bluetooth connectivity and solar charging, have been tested and operate correctly. The resin strap is in great shape with no cracks or discoloration. Service History • Fully checked and serviced (OH completed) • Solar charging tested and Bluetooth connection verified • All chronograph and timer functions work correctly Shipping & Customs Worldwide insured shipping with careful packaging. Customs duties and import taxes are the responsibility of the buyer.