This remarkable G-Shock GA2100-1A2 'CasiOak' from the Neon Accent Series is truly one-of-a-kind. Crafted from comfortable resin in a midnight blue shade that's almost black, it's highly versatile and can be paired with a wide range of outfits. The light blue highlights in the watch boldly stand out, creating a neon effect. It combines style with practicality, boasting all the popular functions of a Casio. It has a day window, timer, light, and incredible durability to accompany you through any adventure. With a case size of 48.5 × 45.4 × 11.8mm and a weight of 51g, it features a carbon/resin case and bezel, along with a resin band. It's shock-resistant, has a Carbon Core Guard structure, and is 200 meters water-resistant. The battery lasts approximately 3 years on SR726W X 2. It comes with mineral glass, world time for 31 time zones (48 cities + coordinated universal time), daylight saving on/off, stopwatch, timer, 5 daily alarms, double LED light, full auto-calendar (to year 2099), mute feature, accuracy of ±15 seconds per month, 12/24-hour format, and a hand shift feature for an unobstructed view of digital display contents. Regular timekeeping includes analog 2 hands (hour, minute moving every 20 seconds) and 1 dial (day), and digital hour, minute, second, pm, month, date.

Using this G-Shock watch is a breeze. To set the time, just use the buttons on the side. You can easily switch between 12 - hour and 24 - hour formats according to your preference. The stopwatch and timer are great for timing workouts or events. Just press the appropriate button to start, stop, or reset them. For the alarms, you can set up to 5 daily alarms to remind you of important tasks. When it comes to the double LED light, press the designated button to illuminate the watch face in the dark. As for the world time feature, it lets you quickly check the time in 31 different time zones. When it comes to maintenance, since it's water - resistant up to 200 meters, you can wear it while swimming or doing water sports without worry. But avoid exposing it to extreme temperatures or strong chemicals. Wipe it clean with a soft cloth regularly to keep it looking good. The battery lasts about 3 years, so when the time comes, take it to a professional to replace the SR726W X 2 batteries.