Indulge in the charm of this remarkable watch. The G - STEEL combines metal and resin to craft a sleek all - black G - SHOCK. It's where toughness meets style, a perfect blend of functionality and fashion. With a 46.6 × 49.6 × 12.9mm case and weighing just 80g, it's both compact and lightweight. The resin/stainless steel case and bezel, along with a resin band, offer durability. It's shock - resistant and has a Carbon Core Guard structure. It can withstand water up to 200 meters and is powered by Tough Solar. The smartphone link feature using Bluetooth® makes it highly convenient. It has a mineral glass, a black ion - plated case, and comes with world time for 38 time zones. Other features include a stopwatch, timer, alarm, double LED light, full auto - calendar until 2099, mute and energy - saving functions. It has an accuracy of ±15 seconds per month without mobile link, and offers various display options and a hand shift feature.

Using your G - Shock GSTB400BB - 1 G - Steel watch is a breeze. To connect it to your smartphone, just turn on Bluetooth on your phone and follow the app instructions. For setting the time, especially the world time, you can easily switch between different time zones in the settings. When using the stopwatch or timer, press the relevant buttons on the side of the watch. As for the alarm, set it according to your needs and turn on the hourly time signal if you like. Remember, this watch is water - resistant up to 200 meters, but avoid exposing it to hot water or high - pressure water. To keep it in good condition, clean the resin band regularly with a soft cloth and mild soap. Keep the watch away from strong magnetic fields and extreme temperatures. If the battery display shows low, expose it to light for a recharge. With proper use and care, your watch will serve you well for a long time.