G-SHOCK GSTB400D-1A

The Casio G-SHOCK GST-B400D-1A is a men's analog-digital sport watch in the G-STEEL line, built for everyday wear and active use. Casio G-SHOCK is known for building watches that take hard impacts and keep running, combining military-grade toughness with connected, solar-powered technology. The all-silver stainless steel case and bracelet give it enough polish for the office while the specs keep pace anywhere outside it.

Display: Analog hands over a digital display; double LED (Super Illuminator) with selectable backlight duration and afterglow.
Toughness: Shock resistant with Carbon Core Guard structure; 200-meter water resistance; mineral crystal glass.
Functions: Tough Solar charging; Bluetooth smartphone link; world time (38 cities); 1/100-second stopwatch; 60-minute countdown timer; 5 daily alarms; hand shift feature.
Case & band: Carbon fiber-reinforced resin case with stainless steel bezel and bracelet; 46.6 x 49.6 x 12.9 mm.
Good to know: The GST-B400D-1A is the thinnest watch in the G-STEEL series as of April 2021, at just 12.9 mm thick.
Wear it: A daily wear piece that moves from the desk to the job site to the water without skipping a beat.