GWN-1000B-1B is a GULFMASTER model designed for marine environments, featuring a black resin case with stainless steel accents and a black resin strap for a durable and functional build. The analog-digital display is set against a dark dial with bold markers engineered for high visibility in harsh conditions. Powered by Tough Solar and equipped with Multi-Band 6 radio-controlled timekeeping, it maintains precise time automatically. Built with shock resistance and 200-meter water resistance, it is suited for demanding outdoor use. Triple Sensor technology provides a digital compass, barometer/altimeter, and thermometer, while tide graph and moon data support marine activities. Sapphire crystal glass protects the dial, and additional confirmed features include world time, stopwatch, countdown timer, daily alarms, and a high-brightness LED light for clear visibility.