G-Shock G Steel GSTB400-1A G-Shock Watches including leap year

including leap year

while reducing overall weight

Auto-calendar (28 days for February)

the dual back cover consists of a stainless steel panel back and an outer cover made of shock-resistant fine resin embedded with glass fibers

Regular timekeeping: Hour

G-Shock G Steel GSTB400-1A G-Shock Watches including leap yearIntroducing new colour variations to the line up of slim G STEEL GST B400 models with new, improved designs made possible by a thin module and carbon core guard structure. There is a standard model in this line up, the GST B400 with silver colour face and resin band. The GST B400 is made possible by even further miniaturization of its parts and thinning of its modules without sacrificing any Bluetooth or solar function. Power consumption has also been