Casio G-SHOCK Blue Chronograph Watch GST-B400BD-1A2

An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet.

Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor.

Your choice of four distinctive styles—the simplicity of a silver metal band and silver case; light silver case set against dark resin band; dial in dramatic red vapor deposition finish paired with a black ion-plated bezel; or dial in bold blue vapor deposition finish with black ion-plated bezel and band. With top bezels treated with five different finishes and middle bezels treated with four, these G-STEEL timepieces deliver exceptional metal textures from every angle.

With dimensions of 46.9 × 49.6 × 12.9 mm, these timepieces redefine lightweight durability. The fusion of resin and stainless steel in the case and bezel, coupled with the carbon core guard structure, ensures unparalleled shock resistance and water resistance up to 200 meters.

Powered by Tough Solar technology and boasting Bluetooth connectivity, these watches offer seamless integration with your smartphone. With features like World Time for 38 Cities, a 1/100-second stopwatch, a countdown timer, and 5 daily alarms, they cater to the demands of modern living. The double LED light illuminates both the face and digital display, while the full auto-calendar ensures you're always up to date. Choose from four distinctive styles, each showcasing exceptional metal textures and vibrant color combinations, to complement your unique style statement. Experience the epitome of sophistication and functionality with the G-STEEL GST-B400 series