Discover the G-Shock GA100-1A1 watch, a top - notch timepiece that perfectly combines style and functionality. Measuring 55 × 51.2 × 16.9mm and weighing just 70g, it offers an ideal blend of durability and comfort. Built with a tough resin case, band, and bezel, this watch can resist shocks and magnetic interference, making it reliable in tough conditions. With a water - resistance of up to 200 meters, you can take on adventures with ease. Powered by a CR1220 battery, it provides around 2 years of continuous use. Its mineral glass is scratch - resistant, keeping the display clear over time. The world - time feature lets you stay in touch with 29 time zones across 48 cities, along with useful functions like a stopwatch, timer, and 5 daily alarms with a snooze option. The full auto - calendar runs until 2099, and it has an accuracy of ±15 seconds per month. You can choose between 12/24 - hour formats for your convenience. The mix of analogue and digital displays gives you a complete view of time and important data. Embrace durability and precision with the G - Shock GA100 - 1A1 for your active life.

Using the G - Shock GA100 - 1A1 is a breeze. To set the time, you can easily switch between 12 - hour and 24 - hour formats according to your preference. The world - time function allows you to quickly check the time in 29 different time zones. Just press the relevant buttons to swap between home and world - time cities. The stopwatch and timer are great for timing your workouts or daily activities. You can set up to 5 daily alarms with a snooze option to wake you up gently. When it comes to the calendar, it's fully automatic and will run until 2099, so you don't have to worry about manual adjustments. As for care, since it's water - resistant up to 200 meters, you can wear it while swimming or during light water - related activities. But avoid exposing it to extremely high - pressure water. Keep it away from strong magnetic fields to maintain its accuracy. Wipe it with a soft cloth regularly to keep the resin case and band clean. And when the battery runs out after about 2 years, have it replaced by a professional to ensure proper functioning.