Introduction This auction features the Casio G-Shock Gulfmaster GWN-1000B, a high-performance timepiece engineered specifically for maritime professionals and enthusiasts. As part of the prestigious "Master of G" series, the Gulfmaster is designed to withstand the harshest conditions at sea, combining legendary shock resistance with a suite of advanced sensors and a bold, technical aesthetic. Historical / Era context Introduced in the mid-2014, the GWN-1000 series represented a major leap in Casio's maritime watch development. It was the first G-Shock to incorporate a "Triple Sensor Version 3" (Altimeter/Barometer, Digital Compass, and Thermometer) alongside a Tide Graph and Moon Data. This model was developed to provide vital information to those navigating the unpredictable nature of the ocean. Its design, inspired by naval instruments, features a large, easy-to-read analog-digital layout and a robust atmospheric pressure change alarm, making it a definitive tool for modern explorers. Condition The watch is running properly. It utilizes Casio's Tough Solar technology, ensuring reliable operation through light exposure. Case and Bezel: The resin and stainless steel case shows visible signs of wear and surface scratches, particularly on the blue Ion-Plated (IP) bezel and the protective resin parts, consistent with its use as a professional tool. Dial and Display: The dial is in excellent condition. The luminous markers and hands are clear, and the digital LCD display is fully functional. Crystal: The mineral glass remains in good condition with no major scratches that impede visibility. Band: Equipped with its original black resin band. The material remains flexible and durable, showing typical surface marks on the strap and metal keeper from previous wear. Functionality: All sensors, including the barometer/altimeter and compass, are operational. The Multi-Band 6 radio-controlled timekeeping ensures high precision. Specifications Brand: Casio Model: G-Shock Gulfmaster Reference: GWN-1000B (Module 5371) Movement: Tough Solar (Solar Powered) Case material: Resin / Stainless steel Case diameter: 56 mm Dial color: Black with blue accents Band: Original Casio resin strap Wrist size: Approximately 20 cm (Adjustable) Closing note The G-Shock Gulfmaster GWN-1000B is a formidable maritime instrument that offers an impressive array of sensors in a virtually indestructible package. While showing signs of authentic use, it remains a technically superior and highly reliable timepiece. It is an ideal companion for any outdoor or nautical adventure. Please examine the high-resolution photographs carefully to confirm the condition before bidding.