Introduction: Casio's G-SHOCK line has defined shock-resistant watchmaking since the early 1980s, and the GR-B300 carries that reputation into the modern era with a robust, sports-driven character. Built in Thailand, this men's model pairs a round stainless steel case with a comfortable resin band, giving it the familiar G-SHOCK balance of toughness and everyday wearability. The black dial is laid out for legibility, supporting day-date display and chronograph timing, while Bluetooth connectivity links the watch to a smartphone for added convenience. Power comes from a solar movement, in keeping with Casio's long-standing focus on practical, low-maintenance technology. It suits collectors of contemporary G-SHOCK references, outdoor and sports enthusiasts, and anyone seeking a durable daily watch with a bold, functional presence. Condition Report: Status: [ Working ] (All basic functions, including crown operation, have been checked and work properly. Keeping time at the time of listing.) Cosmetic: Overall Rank B (excellent pre-owned condition with only minor signs of use). Specs: Brand: CASIO Case Size: approx. 52.5 mm (excluding crown) / Length approx. 37.0 mm Wrist Size: Up to approx. 22.0 cm (8.66 inches) max Material: Stainless Steel Band: Resin Movement: Solar with Day-Date Chronograph Dial: Black dial Reference: G-SHOCK / PROTECTION / GR-B300 Calibre: Cal.5719 Gender: Men's Era: 2020-2025 Maintenance: Cleaned and sanitized. Accessories: Box, Manual, Papers Internal Ref:26-1668 Shipping: Your item will be carefully packed with protective cushioning and secure outer boxing. We ship from Japan within 3 business days of payment via DHL Express, FedEx or Japan Post with online tracking. Customs and Taxes: This item will be shipped from Japan. Please be aware that your country of residence may impose customs duties and import taxes. These additional charges are the sole responsibility of the buyer. Customs policies vary widely from country to country, so we recommend contacting your local customs office for specific information. Search tags/terms; Casio, G-Shock, Casio G-Shock, 5719, GR-B300, GRB300, solar, men's watch, 2020s, stainless steel, black dial