Launched in 2024 as the slimmest entry in the G-STEEL series, the GST-B600-1A redefines rugged elegance by downsizing the iconic G-Shock toughness into a versatile, everyday smartwatch that rivals traditional timepieces in comfort and style. Measuring 41.4 × 42.3 × 11.4 mm and tipping the scales at a featherlight 60 grams (thanks to its bio-based resin strap and fine resin case back), this model fuses a two-piece stainless steel bezel with carbon core guard structure for unyielding protection against shocks, vibrations, and extremes—certified to withstand drops from 10 meters and 200m dives without flinching. The all-black aesthetic, accented by four front screws and a flat-top bezel, delivers a stealthy, modern vibe, while the three-dimensional dial—with layered indices, luminous hands/markers, and a uniquely shaped LCD—creates depth and readability at a glance.

At its heart is Casio’s Tough Solar system, converting ambient light (indoor or outdoor) into power for a rechargeable battery that lasts months without intervention, supplemented by the included USB charging cable for quick top-ups in shaded conditions. Bluetooth v4.2 connectivity pairs effortlessly with the Casio Watches app (iOS/Android), unlocking smart features like:

• Auto Time Correction: One-touch syncing with your phone’s GPS for atomic-level accuracy, including hand shift to reveal the LCD without obstruction.

• World Time & Logs: Track 300+ cities with DST auto-adjust, log times/locations for travel, and set customizable reminders.

• Fitness & Utility Tools: 1/100-second stopwatch with flyback, 1/10-second countdown timer (up to 60 minutes), 5 multi-function daily alarms, perpetual calendar (to 2099), and phone finder to locate your device via the watch.

• Display Enhancements: High-contrast positive LCD for digital info (date, day, battery level), full auto-EL backlight with afterglow, and 12/24-hour formats.

Powered by Module 5724, this watch isn’t just tough—it’s intelligent, with low power consumption ensuring up to 20 months of operation on a full solar charge (or indefinite with light exposure). The 22mm resin strap is adjustable (145-205mm wrist fit), hypoallergenic, and replaceable for personalization., it’s available at Casio authorized retailers, Amazon, and gshock.casio.com. Ideal for urban adventurers, office pros, or fitness buffs, the GST-B600-1A captures the unboxing excitement in your photo—fresh from the box with charger in hand, ready to link up and light up your day with G-Shock’s legendary resilience. For setup, download the app, expose to light, and charge via USB if needed; a 2-year warranty covers defects. If this isn’t the exact variant, check the serial on the case back for confirmation.