




Description
Inspired by the iconic Daydate design, and featuring the prestigious Automatic Miyota Calibre, we present the Seikojust day-date mod. A 39 mm high-end quality watch combining the perfect alliance between excellence and accessibility.
Carefully assembled by experts with the next features:
- Diameter: 39mm (excluding the crown)
- Movement: Automatic Miyota Calibre
- Thickness: 12mm
- Glass: Sapphire, anti-scratch with anti-reflective treatment
- Luminova: Yes
- Case: 316L stainless steel
- Crown: Screwed
- Wrist size: 14,5cm to 22cm (adjustable)
- Lugs: 20mm
- Bracelet: 316L stainless steel (with a security clasp)
- Water resistance: 3 ATM
- Day-Date: Fully functioning day and date
Disclaimer:
This is a custom-built timepiece using genuine Seiko components, such as the movement. It is a third-party modification and is not affiliated with, endorsed by, or manufactured by Seiko Watch Corporation. “Seiko” is mentioned only to describe the origin of certain parts used in this custom build. All trademarks are the property of their respective owners.
Shipping & Returns
Free tracked shipping is available to the destinations shown at checkout. Each made-to-order watch takes 2–3 business days to build and test, followed by 7–10 business days in transit after dispatch. Watches may be returned within 14 days of delivery if unused and in original condition with packaging; we cover return shipping.
Can I service my watch locally?
Yes. Any competent local watchmaker can service your watch. We use genuine, dependable Seiko automatic calibres renowned for their durability, so maintenance is rarely required under normal wear.
What is an automatic watch?
An automatic watch has no battery. The movement of your wrist winds its mechanical movement while you wear it. If left unworn for around 42 hours it may stop; simply wear it again or gently turn the crown to restart it. This traditional watchmaking mechanism is more intricate than quartz.
What makes our watches high quality?
Every watch is built with a genuine Seiko automatic movement, scratch-resistant sapphire crystal and corrosion-resistant 316L stainless steel. Each piece is assembled, regulated and inspected before dispatch.
Description
Inspired by the iconic Daydate design, and featuring the prestigious Automatic Miyota Calibre, we present the Seikojust day-date mod. A 39 mm high-end quality watch combining the perfect alliance between excellence and accessibility.
Carefully assembled by experts with the next features:
- Diameter: 39mm (excluding the crown)
- Movement: Automatic Miyota Calibre
- Thickness: 12mm
- Glass: Sapphire, anti-scratch with anti-reflective treatment
- Luminova: Yes
- Case: 316L stainless steel
- Crown: Screwed
- Wrist size: 14,5cm to 22cm (adjustable)
- Lugs: 20mm
- Bracelet: 316L stainless steel (with a security clasp)
- Water resistance: 3 ATM
- Day-Date: Fully functioning day and date
Disclaimer:
This is a custom-built timepiece using genuine Seiko components, such as the movement. It is a third-party modification and is not affiliated with, endorsed by, or manufactured by Seiko Watch Corporation. “Seiko” is mentioned only to describe the origin of certain parts used in this custom build. All trademarks are the property of their respective owners.
Shipping & Returns
Free tracked shipping is available to the destinations shown at checkout. Each made-to-order watch takes 2–3 business days to build and test, followed by 7–10 business days in transit after dispatch. Watches may be returned within 14 days of delivery if unused and in original condition with packaging; we cover return shipping.
Can I service my watch locally?
Yes. Any competent local watchmaker can service your watch. We use genuine, dependable Seiko automatic calibres renowned for their durability, so maintenance is rarely required under normal wear.
What is an automatic watch?
An automatic watch has no battery. The movement of your wrist winds its mechanical movement while you wear it. If left unworn for around 42 hours it may stop; simply wear it again or gently turn the crown to restart it. This traditional watchmaking mechanism is more intricate than quartz.
What makes our watches high quality?
Every watch is built with a genuine Seiko automatic movement, scratch-resistant sapphire crystal and corrosion-resistant 316L stainless steel. Each piece is assembled, regulated and inspected before dispatch.






































