The Casio G-Shock GD-100GB-1DR is a robust digital-analog wristwatch for men who require reliable timekeeping under demanding conditions. This model features a striking gold-colored plastic case and strap, offering both visual appeal and practical durability. The watch combines a dual-display system with analog hands and digital readouts for comprehensive time measurement across multiple functions. With a case diameter of approximately 55 mm and a thickness of 17 mm, the watch provides a substantial presence while remaining comfortable to wear. Key functional elements include a 1/100-second stopwatch with time measurement modes, a countdown timer with auto-repeat function, and five daily alarms with a snooze feature. The full auto-calendar adjusts automatically for months of varying lengths up to the year 2099, ensuring long-term accuracy. Water-resistant up to 200 meters (20 bar), this watch is suitable for professional marine activities and serious surface water sports, but not for scuba diving. The mineral glass offers scratch resistance for everyday use, while the shock-resistant construction protects the movement from impacts and vibrations. The electroluminescent backlight with afterglow ensures clear visibility in low light conditions, with an automatic LED light that activates when the watch is tilted towards the face. The plastic strap features a secure pin buckle and is designed for comfortable long-term wear. The battery life typically lasts about two years under normal usage conditions. This G-Shock model upholds the brand's reputation for producing timepieces that withstand challenging environments while providing comprehensive timekeeping functionality.