G-Shock GSTB400-1A

The G-Shock GSTB400-1A is a genuine Casio G-SHOCK G-STEEL G-SHOCK identified by model GSTB400-1A. This black watch pairs the brand’s shock-resistant DNA with product-specific styling from the GSTB series, making it a strong choice for collectors and everyday wear.

• Exact model/SKU: GSTB400-1A
• G-Steel G-Shock with a layered metal-and-resin case, Bluetooth/Tough Solar features on many models and dressier toughness
• Black colorway matched to the product handle and model code

Built for durability, comfort and everyday reliability, this model brings G-SHOCK toughness together with a distinctive look that matches the exact SKU listed for this product.