The quick answer.
Cronos L6038M 39 mm Automatic (Blue Open-Heart Dial / Miyota 90S5) is an integrated-bracelet automatic watch with case dimensions 39 mm diameter × 44 mm lug-to-lug × 10.15 mm thick at $345. We recommend it for a buyer who wants a compact integrated-bracelet automatic, a richly textured blue dial and a visible mechanical feature.
Why it belongs on the shortlist.
The Blue option brings a repeating, light-catching texture to the dial and keeps the mechanical display focused in a small opening at six. That makes it more distinctive than a standard sunburst face without turning the whole dial into a skeleton. The angular steel case flows into an integrated bracelet, and the see-through back gives the Miyota automatic movement a second place in the design.
A textured dial with a restrained mechanical window.
The L6038M Blue uses a repeating patterned surface to catch the light, then exposes a small part of the movement at six. The surrounding dial remains covered, so the watch keeps its time display legible instead of becoming a fully open skeleton. We like this balance for buyers who want some mechanical theatre without giving up a clear hour-and-minute layout.
The compact case is the useful fit story.
Cronos lists a 39 mm diameter, 44 mm lug-to-lug and 10.15 mm thickness. Those proportions put the case on the compact side for an integrated-bracelet design, while the angular steel shape still gives it a strong wrist presence. The seller lists a 19.0–19.5 cm bracelet length; confirm sizing and adjustment before you order.
A named Miyota automatic and a see-through back.
Cronos identifies the Miyota 90S5 and lists an approximately 40-hour power reserve. The dial window is listed as sapphire, and the transparent caseback shows the movement from the other side. These are seller specifications rather than independent measurements, but together they give the L6038M a clear mechanical identity.
Keep the water rating in context.
Cronos lists 10 ATM / 100 m water resistance for the L6038M. We have not independently tested the watch, and the product page’s broad water-use language does not establish a third-party dive certification. Treat the rating as the seller’s specification and check the current manufacturer guidance before using it in water.
The supplied code is separate from the listed price.
Cronos listed the Blue Miyota 90S5 option at $345 USD on October 23, 2026. The supplied Cronos Watch code SEBASTIANBASSOL is for 5% off, but we have not tested it on this exact model and show no after-code total. Follow our Cronos partner link, find the L6038M Blue and confirm the code and final amount in your order summary.
The details, at a glance.
- Selected option
- L6038M · Blue · Miyota 90S5
- Case dimensions
- 39 mm diameter · 44 mm lug-to-lug · 10.15 mm thick, as listed by Cronos
- Movement
- Miyota 90S5 automatic · approximately 40-hour reserve, as listed by Cronos
- Dial and caseback
- Textured blue dial with an open-heart aperture · see-through caseback
- Crystal
- Sapphire dial window, as listed by Cronos
- Case and bracelet
- Stainless steel · Cronos lists a 19.0–19.5 cm bracelet length
- Water resistance
- 100 m / 10 ATM, as listed by Cronos; not independently tested or dive-certified
- Current listed price
- $345 USD on October 23, 2026
- Reader code
- SEBASTIANBASSOL · supplied 5% off; this exact option has not been tested at checkout
What draws us in
- The blue perlage texture gives the dial depth while the open-heart aperture stays contained at six
- A 39 mm diameter, 44 mm lug-to-lug and 10.15 mm listed thickness make the case dimensions easy to compare
- Cronos pairs the Miyota 90S5 automatic with a see-through caseback and a sapphire dial window
Before you choose
Cronos lists a 19.0–19.5 cm bracelet length, so confirm that the supplied bracelet can be fitted to your wrist before ordering. The seller lists 100 m / 10 ATM water resistance, but we have not tested it and the listing does not establish an independent dive certification. Treat that figure as the manufacturer’s rating and follow Cronos’s current care guidance.
Who it suits.
A buyer who wants a compact integrated-bracelet automatic, a richly textured blue dial and a visible mechanical feature.
When to choose something else.
Choose a simpler dial if you prefer a conventional closed face, or a watch with independently documented water testing if that evidence is important to you.
Warranty, returns and ownership.
Cronos links to its warranty and return policies, but the product page does not state model-specific terms. Check the current conditions for your destination and confirm bracelet sizing before ordering.
Closest alternatives.
- Cronos L6050M 36 mm Automatic (Brown Scale Pattern, PT5004): Choose the 36 mm L6050M if you want a smaller integrated-bracelet automatic with a warm brown scale-pattern dial.
- Cronos 39mm EX L6041 Automatic Watch (Black / Miyota 90S5): Compare the L6041 if you prefer another 39 mm Cronos automatic with a more conventional dial and case silhouette.
Use the 44 mm lug-to-lug span and listed bracelet length to judge fit.
Cronos lists a 39 mm diameter, 44 mm lug-to-lug and a 19.0–19.5 cm bracelet length. The compact case span is useful, but confirm the bracelet can be sized comfortably for your wrist. Use our wrist-fit guide and compare the proportions with a watch you already enjoy wearing.
Cronos Watch partner code and offer terms. Our supplied code is SEBASTIANBASSOL for 5% off. Check the exact model and variant at the store, then confirm eligibility and the final total at checkout.
Where to buy.
Specifications and product photography: Cronos L6038M official product page (checked October 23, 2026). Find L6038M 39 mm Automatic (Blue Open-Heart Dial / Miyota 90S5) at Cronos Watch through our partner link and search for the selected option there. How we choose.
A few good questions.
What is the discount code for the Cronos L6038M 39 mm Automatic (Blue Open-Heart Dial / Miyota 90S5)?
The Cronos Watch discount code is SEBASTIANBASSOL for 5% off at cronos.watch. We have not tested it on this exact model, so confirm the saving in your order summary. Every code and tested price: https://watchritual.com/promo/cronos-watch
What movement is in the Cronos L6038M 39 mm Automatic (Blue Open-Heart Dial / Miyota 90S5)?
Cronos lists the Miyota 90S5 automatic movement and an approximately 40-hour power reserve for the L6038M.
How large is the Cronos L6038M 39 mm Automatic (Blue Open-Heart Dial / Miyota 90S5)?
Cronos lists a 39 mm diameter, 44 mm lug-to-lug span and 10.15 mm thickness. Its specification graphic gives a 19.0–19.5 cm bracelet length.
Is the Cronos L6038M 39 mm Automatic (Blue Open-Heart Dial / Miyota 90S5) a fully skeletonized watch?
No. The Blue option has a textured dial with a small open-heart aperture at six; most of the dial remains covered.
What water-resistance rating does the Cronos L6038M 39 mm Automatic (Blue Open-Heart Dial / Miyota 90S5) have?
Cronos lists 100 m / 10 ATM. We have not independently tested the watch, and the product listing does not establish a dive certification.
