Casio G-SHOCK GST-B400 Black Blue Steel Watch

4.2 (5 reviews)
$88.99 USD Compare at $129.99 -32%
  • Quality-checked before dispatch
  • Free shipping, arrives in 3-5 days
  • Secure checkout

Inspired by the Casio G-SHOCK GST-B400, this 1:1 UA replica features a sleek black stainless steel case with a striking blue dial and matching blue resin band. Ultra-slim 12.9mm profile with carbon-core protection delivers shock resistance without bulk. Triple-eye dual-hand dial design radiates bold masculine style with red-black accents and meticulous metal vapor-coating for premium feel.

Built with precision stainless steel components, six-corner screw-secured case construction, and oversized ergonomic buttons. Functions include shock resistance, full auto-calendar, 12/24-hour display, world time, countdown timer, stopwatch, multi-function alarm, and dual LED illumination for visibility in any condition.

Includes free worldwide shipping with detailed QC photos before dispatch. Premium materials and finishing match retail specifications for an premium wearing experience.

BrandCasio
SizeOne Size
ShippingFree worldwide shipping
QualityChecked before dispatch
4.2 Based on 5 reviews
Sophie M. ★★★★★ Verified Purchase

Great quality and comfortable straight out of the box. Packaging was solid, no complaints.

Carlos R. ★★★★★ Verified Purchase

Love the colourway. Took a day to break in but very happy overall.

Emily W. ★★★★★

Better than I expected for the price. Stitching looks clean and the materials feel premium.

Tyrone J. ★★★★★ Verified Purchase

Fit runs slightly large — I sized down half and they fit perfectly now.

Mei L. ★★★★★ Verified Purchase

Shipping took a little while but worth the wait. Super comfy on the feet.

Q: What is the case thickness?

A: The case thickness is 12.9mm from back engraving to dial, making it over 1mm slimmer than comparable models while maintaining full durability.

Q: Does the LED illumination work?

A: Yes, the dual LED illumination system functions perfectly, providing bright backlight for both analog and digital displays in low-light conditions.

Q: Is the band adjustable?

A: The resin band is fully adjustable with standard links. Tools for sizing are included in the package, and we recommend having it professionally fitted for comfort.

Q: What warranty or guarantee is included?

A: All items include free worldwide shipping, detailed QC photos before dispatch, and a satisfaction guarantee. Please contact our support team with any issues.

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