The G-Shock GMDS5610BB-1D Black Out Digital is a striking timepiece that combines durability with sleek, modern design. The watch features a matte black finish, accentuating its iconic square shape in a slimmer, more refined form. This model is part of the Black Out series, offering a uniform all-black aesthetic with a robust build ideal for daily wear. It boasts a shock-resistant structure, in true G-SHOCK fashion, ensuring reliable performance in tough conditions. The watch includes an LED backlight with Super Illuminator and Afterglow, providing clear visibility in low-light environments. Additionally, the GMDS5610BB-1D is equipped with a flash alert system that flashes and sounds a buzzer for alarms, hourly time signals, and countdown timer time-ups. It also features a 1/100-second stopwatch and a countdown timer for precise timing needs. The multi-function alarm helps keep you on schedule, while the hourly time signal ensures you stay on track throughout the day. With a full auto-calendar accurate until 2099, the watch is designed for seamless timekeeping. Regular timekeeping functions include hour, minute, second, PM, month, date, and day, all displayed in either a 12 or 24-hour format. The accuracy is ±15 seconds per month, and the battery life lasts approximately three years on a CR1616 battery, making it a reliable companion for years to come. - Module No. 3523 - 45.7 x 40.5 x 11.9 Case Size - 42g Weight - Shock resistant (G-SHOCK) - LED backlight (Super Illuminator)Afterglow - Flash alert: Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm - 1/100-second stopwatch - Countdown timer - Multi-function alarm - Hourly time signal - Full auto-calendar (to year 2099) - 12/24-hour format - Regular timekeeping: Hour, minute, second, pm, month, date, day - Accuracy: ±15 seconds per month - Approx. battery life: 3 years on CR1616