CASIO G-Shock G-Steel Stainless Steel Solar Black-Red/Silver | GSTB400-1AIntroducing a new lineup of slim G STEEL GSTB400 models with new, improved designs made possible by a thin module and carbon core guard structure. The standard model in this lineup, the GSTB400 1A sports a silver color face and resin band. The GSTB400 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 significantly reduced. In