The G-Shock GSTB400GB-1A9 Stay Gold Theme Men's Watch is a top - pick for well - to - do men. Its black and gold exterior blend perfectly, enhancing the watch's beauty. This watch comes with world time, a stopwatch, and smartphone link on a dual - timekeeping face. It has all the durability and functions typical of G - Shock, like a hand shift feature and an auto - date calendar. The ion - plated stainless steel carbon core guard structure makes the brushed matt black resin bezel and strap stand out. This versatile watch offers a casual yet ultra - luxurious look, with a shock - absorbing structure and tough solar power. It also has LED light and illumination features. With a 46.6×49.6×12.9mm case size and weighing 80g, it has a resin/stainless steel case and bezel, a resin band, and is shock - resistant and 200 meters water - resistant. It's solar - powered, has Bluetooth wireless linking, a mineral glass, and supports world time in 38 time zones. It also includes a stopwatch, timer, alarm, double LED light, full auto - calendar until 2099, a mute feature, power - saving mode, and an accuracy of ±15 seconds per month without mobile link. It's a sophisticated, luxurious, and practical choice.
Using your G - Shock GSTB400GB - 1A9 watch is a breeze. To set the time, you can use the mobile link feature via Bluetooth to connect it to your smartphone and synchronize the time automatically. For the stopwatch, just press the relevant button to start, stop, or reset it. The timer works similarly. To use the world time function, simply select the city you want from the 38 available time zones. When it comes to the double LED light, press the designated button to illuminate the watch face. As for the calendar, it's fully automatic and will keep track of the date until 2099. Regarding the mute feature, you can turn the button operation tone on or off as you like. For power - saving, if you leave the watch in the dark, the display will go blank to save energy. When it comes to maintenance, keep it away from extreme temperatures and strong magnetic fields. Clean the resin band regularly with a soft, damp cloth. The watch is 200 meters water - resistant, but it's still a good idea to dry it thoroughly after getting it wet. And remember, the battery can last up to 7 months with normal use after a charge, or 18 months in total darkness with the power - save function on after a full charge.
