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SEIKOAK BLUE

Name: SEIKOAK BLUE
Brand: CALX
Price: 277.95 USD
Availability: InStock

$277.95 USD

~~$308.84 USD~~ $277.95 USD

10% OFF Sold out

Product variants

DETAILS

CALX upgrades Seiko movements with premium materials to bridge the gap between iconic design and reliability. Handcrafted by experts in the US and Japan.

• Seiko Movement: Genuine Automatic NH35

• Sapphire Crystal for near-diamond hardness

• 316L Stainless Steel case and bracelet for durability

• 5-point quality control, including dry-pressure test and microscopic hand-alignment done in Ohio, USA.

SPECIFICATIONS

Case: 316L stainless steel

Bracelet: 316L stainless steel

Glass: Sapphire crystal, anti-scratch and anti-reflective treatment

Diameter: 41mm

Wrist size: 14.5cm to 22cm (adjustable)

30-DAY FULL WARRANTY

We offer returns for all timepieces.

We have a 30-day full warranty. Within 30 days of receiving your watch, if you are not satisfied with your timepiece, you can be refunded.

See our full return/exchange policy here.

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01.

SEIKO MOVEMENT

CALX watches are powered by a genuine, Japanese-manufactured Seiko NH35 automatic movement, ensuring a lifetime of mechanical precision.

02.

CALX UPGRADE

Surgical-grade 316L steel and scratch-proof sapphire crystal. Every build is pressure-tested in our Ohio, US office to outperform typical Seiko mods in both precision and durability.

CALX Comparison Table Preview

WHY CALX?

Technical Feature	CALX WATCHES	MASS-MARKET MODS
Movement	Genuine Seiko NH35	Generic Clones
Material	Surgical-Grade 316L Steel	Low-Grade 304 Steel
Crystal	Double-Domed Sapphire	Mineral Glass Crystal
Quality Testing	5-Point Audit, Pressure Test	Untested, Standard Assembly
Origin	Hand-Built in Ohio, USA	Dropship, Overseas Assembly

Antonio W ★ ★ ★ ★ ★
I was looking for a Seiko mod that didn't feel like a toy. This feels like a precision tool. The sapphire crystal is clear, and the Seiko movement is perfect.
Dale S ★ ★ ★ ★ ★
I get more questions about my Seitona than any other watch. Fast US shipping after being built was also a huge plus.
Javier P ★ ★ ★ ★ ★
The bezel and bracelet finishing is very good. I like how the bezel plays in the light. It's keeping time perfectly.

1 3

Need help?

FREQUENT QUESTIONS

Is this an official Seiko product?

CALX timepieces are custom-built using genuine Seiko-manufactured movements. We are an independent workshop that enhances the Seiko experience with premium materials, such as sapphire and 316L steel. We are not directly affiliated with Seiko Watch Corp.

Will this watch fit me?

Yes. All CALX watches include a free tool to help you adjust the strap to fit your wrist perfectly.

When will I receive my watch?

At CALX, we are committed to providing a quality and smooth shopping experience. This is achieved through our 5-point quality control audit. Every effort is made to start your order as soon as possible. Orders are processed within 1-3 business days.

All CALX watches are handcrafted in the US and Japan. We will require 4-6 working days to carefully build your timepiece. Our 5-point quality control audit, including a pressure test, will ensure our CALX standard. This process may take 2-3 business days. We will ship your watch to you through USPS and you can expect it between 2-4 working days.

Our full shipping policy is available here.

How can I contact CALX?

We try to provide the best customer support. Please email us at support@calx.shop or message us through our Contact page. We will get back to you as soon as possible.