Dayline Calendar Aqua Blue by Crownlab

Built around a classic day-and-date dress design and featuring an automatic Miyota calibre, the Dayline Calendar Aqua Blue by Crownlab is a 39mm high-end timepiece combining excellence with accessibility. It showcases a vibrant aqua blue sunburst dial paired with polished silver baton indices and a fluted bezel for a fresh, modern look.

Carefully hand-assembled by experts and finished on a premium five-link steel bracelet.

Premium Features:

Diameter: 39mm (excluding the crown)
Movement: Automatic Miyota calibre (reliable, smooth sweeping)
Thickness: 12mm
Glass: Synthetic sapphire, scratch-resistant with anti-reflective treatment and a date magnifier
Luminova: Yes
Case: Premium 316L stainless steel
Crown: Screwed down for secure sealing
Dial: Aqua blue sunburst finish with polished silver baton markers, a day window at 12 o'clock and a date window at 3 o'clock
Wrist size: 14.5cm to 22cm (fully adjustable)
Lugs: 20mm
Bracelet: Premium 316L stainless steel five-link bracelet with a secure folding deployment clasp
Water resistance: 3 ATM (daily splash resistance)

Independent Custom Build

Crownlab timepieces are independently assembled custom watches, built on genuine Seiko® movements with aftermarket components. They are not original Seiko® products and are not affiliated with, authorised by, or endorsed by Seiko Watch Corporation or any other watch manufacturer or trademark holder. Any third-party names are used solely to describe compatible components. All logos, trademarks and brand names are the property of their respective owners.

Made with care

Great value

Elegant design

Quality materials

Precision: Powered by high-caliber Japanese automatic movements for flawless accuracy and reliability.

Materials: Crafted with surgical-grade stainless steel and scratch-resistant sapphire glass.

Craftsmanship: Individually assembled, calibrated, and rigorously tested for perfect execution.

Fast Processing: Orders are inspected, securely packaged, and dispatched within 1–3 business days.
Tracked Delivery: A tracking number will be emailed to you as soon as your timepiece ships.
Hassle-Free Returns: We want you to love your watch. If you are not completely satisfied, you can return your unworn timepiece in its original packaging within 14 days of delivery.

Need a return or exchange? Simply reach out to our dedicated support team at service@crownlab.com and we will guide you through the process.