Casio G-Shock GSTB400GB-1A9 G Steel Black Dial Analog-Digital

The Casio G-Shock GST-B400GB-1A9 is a standout in the G-STEEL lineup, bringing a fusion of industrial strength and refined styling through its black and gold colorway. Its slim 12.9 mm profile—remarkably thin for a G-STEEL houses a carbon core guard structure, reinforcing its shock resistance without unnecessary bulk. The 49.6 mm stainless steel case, complemented by a resin band, offers both durability and comfort, making it a versatile option for daily wear and harsher conditions alike.

Driven by Casio’s Tough Solar technology, the GST-B400GB-1A9 efficiently converts light to power, supporting extended use without battery changes. It’s equipped with Bluetooth® connectivity, enabling seamless synchronization with your smartphone for automatic time updates and a host of other features via the G-Shock Connected app. The dial showcases a layered, three-dimensional design with gold-tone accents and luminous markers, enhancing visibility in various lighting conditions.

Water resistance up to 200 meters ensures the watch is prepared for aquatic adventures, while features like a 1/100-second stopwatch, countdown timer, five daily alarms, and world time across 300 cities bolster its multifunctional utility. The mineral glass and robust bezel protect against scratches and impacts, solidifying its reputation as a dependable tool watch. Blending toughness with contemporary tech, the GST-B400GB-1A9 stands out as one of the thinnest and most refined G-STEEL options to date.