--- product_id: 796579877 title: "GSTB400-1A" brand: "g-shock" price: "€ 1102.54" currency: EUR in_stock: true reviews_count: 5 category: "G Shock" url: https://www.desertcart.es/products/796579877-gstb400-1a store_origin: ES region: Spain --- # Solar-powered efficiency Bluetooth mobile link Carbon Core Guard impact resistance GSTB400-1A **Brand:** g-shock **Price:** € 1102.54 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your wrist game with the thinnest, toughest G-Steel ever. ## Quick Answers - **What is this?** GSTB400-1A by g-shock - **How much does it cost?** € 1102.54 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/796579877-gstb400-1a) ## Best For - g-shock enthusiasts ## Why This Product - Trusted g-shock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Carbon Core Guard structure delivers top-tier shock resistance for your active lifestyle. - • **Effortless Control:** Large stainless steel buttons with minimal guards for smooth, stylish operation. - • **Slimmest G-Steel Yet:** At just 12.9mm thick, it’s the ultimate sleek statement on your wrist. - • **Power Meets Precision:** Tough Solar technology ensures you’re always charged without the hassle. - • **Seamless Connectivity:** Bluetooth linking keeps your watch synced and your schedule on point. ## Overview The Casio G-Shock GSTB400-1A redefines rugged elegance with its ultra-thin 12.9mm carbon core guard design, solar-powered battery, and Bluetooth connectivity. Engineered for professionals who demand durability and style, it offers 200-meter water resistance, shock resistance, and a sophisticated analog-digital display with world time and LED illumination. ## Description From Casio G-Shock, this G-Steel Slim GSTB400 model boasts a new and improved design 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 April 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. In terms of design, the number of button guards has been reduced as much as possible, enabling the use of large stainless steel buttons that are slim yet easy to operate. The top bezel has been given five different finishes, while the middle bezel has been given four different finishes, which creates an elegant effect and changes the appearance of the texture of the metal depending on the viewing angle.Case/bezel material: Resin/Stainless steelBlack resin bandMineral GlassNeobriteShock ResistantCarbon Core Guard structure200-meter water resistanceShock resistantTough Solar (Solar powered)Double LED lightLED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds),afterglow)Mobile link (Wireless linking using Bluetooth(R))Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)World time: 38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping1/100-second stopwatchCountdown Review: CasioGSTB4001A Review: Terrible, awful app ## Features - From Casio G-Shock, this G-Steel Slim GSTB400 model boasts a new and improved design 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 April 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 - In terms of design, the number of button guards has been reduced as much as possible, enabling the use of large stainless steel buttons that are slim yet easy to operate ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B092BVGQ1S | | Age Range Description | Adult | | Band Colour | Black | | Band Material | Stainless Steel | | Band Style1 - Band Style5 | G-Steel | | Band Width | 28.2 Millimetres | | Brand | G-Shock | | Case Diameter | 12.9 Millimetres | | Case Material1 - Case Material2 | Metal | | Case Shape | Round | | Case Thickness | 12.9 Millimetres | | Character | fashion | | Clasp Type | Buckle | | Closure Type | Buckle | | Country of Origin | China | | Crystal Material | mineral | | Customer Reviews | 4.6 out of 5 stars 95 Reviews | | Dial Colour | Black | | Display Type | Analog-Digital | | Embellishment Feature | Crystal | | Face Style | Sporty | | Item Type Name | Sport Watch | | Item Weight | 0.5 Pounds | | Manufacturer | G-Shock | | Model Name | G-Steel | | Model Number | GSTB400-1A | | Movement Type | Japanese Quartz | | Part Number | GSTB400-1A | | Power Source Type | Solar Powered | | Series Number | 400 | | Special Feature(s)1 - Special Feature(s)3 | Shock Resistant, World Time, dual-Time-display, light, stop-watch | | Sport1 - Sport3 | Multi-Sport | | Strap Type | Bracelet | | UPC | 889232303574 | | Unit Count | 1 Count | | Water Resistance Depth | 200 Metres | | Water Resistance Level | Water Resistant | ## Images ![GSTB400-1A - Image 1](https://m.media-amazon.com/images/I/61dQb+fIRiL.jpg) ## Questions & Answers **Q: what is the purpose of blue tooth if it's not a smart watch?** A: THE WATCH SYNCS WITH YOUR SMART PHONE. WHEN CONNECTED YOUR WATCH WILL ALWAYS HAVE THE EXACT CORRECT TIME. YOU CAN ALSO CHAGE THE SETTINGS ON A CONNECTED PHONE. I HAVE SEVERAL WATCHES CONNECTED TO THIS APP. THIS FEATURE REPLACES ATOMIC TIME KEEPING WHICH WORKED WELL BUT ONLY CONNECTED AT NIGHT TO UPDATE THE TIME. **Q: Is the dial at least sapphire glass for that crazy price?** A: Mineral Chrystal it’s noted in the description **Q: Are you a authorized casio dealer?** A: Hello, We are official authorized dealer for Casio G-SHOCK. I don't know about the other sellers though. Best regards, GTJ **Q: Does watch have day and date?** A: Nice watch but, does not have a day of the week. It does have the month and day: 3 20 (March 20th. ## Customer Reviews ### ⭐⭐⭐⭐⭐ CasioGSTB4001A *by H***. on 27 February 2026* ### ⭐ Terrible, awful app *by A***N on 10 September 2023* ### ⭐⭐⭐⭐⭐ Excelente g-shock *by J***A on 14 February 2023* Es un poco más pequeño de lo que se ve en foto, pero aún así es muy bonito el reloj, es brillante el acabado y se ve genial en tu mano, muy recomendable. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.es/products/796579877-gstb400-1a](https://www.desertcart.es/products/796579877-gstb400-1a) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-05-19*