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Must-have G-shock Gstb400x-1a4 G-steel Slim Carbon Fiber Solar Travel Size [xUGdoa8n]

$57.99 $185.99 -69%

Must-have G-shock Gstb400x-1a4 G-steel Slim Carbon Fiber Solar Travel Size [xUGdoa8n] Introducing the GSTB400X-1A4, the latest marvel in the G-STEEL series. This slim, sophisticated timepiece is a testament to Casio's commitment to innovation and style. Crafted with a lightweight ye

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Must-have G-shock Gstb400x-1a4 G-steel Slim Carbon Fiber Solar Travel Size [xUGdoa8n]

Must-have G-shock Gstb400x-1a4 G-steel Slim Carbon Fiber Solar Travel Size [xUGdoa8n]

Introducing the GSTB400X-1A4, the latest marvel in the G-STEEL series. This slim, sophisticated timepiece is a testament to Casio's commitment to innovation and style. Crafted with a lightweight yet tough carbon bezel, the GSTB400X-1A4 combines carbon fiber reinforced resin and carbon sheets for an unparalleled blend of durability and elegance. With a black resin band and a black IP case that features red accents, this watch is designed to make a statement without compromising on practicality.
  • Lightweight and Tough Carbon Bezels
  • Black Resin Band and Black IP Case with Red Accents

Advanced Features and Specifications

The GSTB400X-1A4 is not just a stylish piece; it's a technological masterpiece. Engineered with miniaturization and thinning of its modules, this watch retains all Bluetooth and solar functions while significantly reducing power consumption. Its carbon core guard structure ensures a high level of impact resistance, making it the thinnest in the G-STEEL Series as of April 2021, with a thickness from the back cover to the bezel top of just 12.9 mm. The reduction in button guards allows for the use of large, stainless steel buttons that are both slim and easy to operate.
  • Miniaturization and Thin Module Design
  • Carbon Core Guard Structure for Impact Resistance

Long Battery Life and Durability

Longevity and reliability are at the heart of the GSTB400X-1A4. With an approximate battery operating time of 7 months on a rechargeable battery with normal use and 18 months when stored in total darkness with the power save function on, this watch is built to last. Its case and bezel are made of resin and stainless steel, while the mineral glass and Neobrite features enhance readability and durability. The GSTB400X-1A4 is shock-resistant and equipped with a carbon core guard structure, ensuring that it can withstand the rigors of daily life.
  • Long Battery Life of 7-18 Months
  • Resin/Stainless Steel Case and Bezel, Mineral Glass

What Our Customers Say

February 5, 2026

Absolutely no complaints!

A great item. And good quality.

- Mindy Z..

February 5, 2026

Absolutely no complaints!

This item is a definite standout.

- Angel H..

February 5, 2026

Absolutely no complaints!

It’s a very well-made, high-quality gadget.

- Gabrielle A..

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