About this itemProduct details Introducing 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 addition, the carbon core guard structure of this model helps to make it the thinnest of the G-STEEL Series (as of Apr 2021) while maintaining a high level of impact resistance. The thickness from the back cover to the bezel top is only 12.9 mm, which is more than one millimeter less than the GSTB100 model. Features: - Case Size and Face Shape: 46.6 x 49.6 x 12.9mm stainless steel case - Strap Material: Resin strap - Movement: Quartz digital - Display: Analog and Digital with Bluetooth Connectivity - Water Resistance: 200M Water Resistant SKU: GSTB400-1A Material: Metal Color: Silver/Black Case Size and Face Shape: 46.6 x 49.6 x 12.9mm stainless steel case Strap Material: Resin strap Movement: Quartz digital Display: Analog and Digital with Bluetooth Connectivity WarrantyWarranty informationPlease be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase. There are currently no product reviews. Write Review