CASIO G SHOCK G-STEEL GST-B400AD-1A4JF GST-B400AD-1A4 solar drive 20 bar watch

? ABOUT THIS BRAND ELEGANCE AND TECHNOLOGY G-Shock is a line of watches manufactured by Japanese electronics company Casio, designed to resist mechanical shock and vibration. G-Shock is an abbreviation for Gravitational Shock. The watches in the G-Shock line are designed primarily for sports, military and outdoors-oriented activities; nearly all G-shocks are digital or a combination of analog and digital and have a stopwatch feature, countdown timer, electroluminescent backlight and 200-metres of water resistance. Product Description ?From the toughness watch G-SHOCK, it is G-STEEL's GST-B400 that is slim and has improved design. By reducing the size of parts and thinning the module, the functionality of Bluetooth? and solar is maintained while the thickness is reduced, and power consumption is also significantly reduced. In addition, the carbon core guard structure makes it the thinnest in the G-STEEL series (as of December 2020). The distance from the back to the bezel top