[Introduction] This Casio G-SHOCK GST-B100 is a bold and highly functional modern sports watch from the popular G-STEEL series, combining the toughness of G-SHOCK with a strong stainless steel bezel and an analog display layout. The black dial, resin strap, and rugged multi-layer construction give it a powerful contemporary look suited to both daily wear and active use. [Historical & Collector Value] The G-STEEL line represents an important evolution within the G-SHOCK family, bringing metal construction and a more premium finish to the brand’s signature shock-resistant concept. The GST-B100 is especially appealing for its modern analog-focused design, Tough Solar charging system, and smartphone connectivity, making it a desirable reference for collectors and users who appreciate advanced contemporary G-SHOCK models. As part of the well-known G-STEEL collection, it continues to enjoy strong market demand and broad collector appeal. Specifications ◇ Brand: Casio ◇ Model: G-SHOCK G-STEEL ◇ Reference: GST-B100 ◇ Module: 5513 ◇ Movement: Solar ◇ Case material: Stainless steel / resin ◇ Bezel: Stainless steel ◇ Dial color: Black ◇ Display: Analog with date ◇ Functions: Tough Solar, Bluetooth connectivity, shock resistance ◇ Water resistance: 200 m ◇ Case size: Approx. 53 mm excluding crown ◇ Strap: Black resin strap ◇ Wrist size: Approx. 19 cm shown in photo ・Condition Excellent condition with minor signs of normal use. The case retains a strong and clean overall appearance, the dial presents sharply, and the strap remains well suited for continued use. ・Service History Operational checks have been performed, and the watch is functioning at the time of listing. As a solar-powered watch, charging and operational condition have been checked at the time of listing. Future maintenance may be required depending on usage and the buyer’s standards. ・Shipping & Customs This item ships from Japan and will be carefully packed for safe delivery. International shipping is available. Any customs duties, import taxes, or related fees are the buyer’s responsibility.