Seikomariner | Ice blue Roman dial
€259.00
incl. VAT, free shipping
Seikomariner | Custom Diver Mod Blue “Ocean” Dial
NH35 Automatic · Sapphire Crystal · 316L Stainless Steel
€259.00
€259.00
incl. VAT, free shipping
You can also pay in 3 instalments with Klarna
Dial
Hand-assembled · Delivery 10–12 days after ordering
Quality takes time.
- Ordered
- Built
- Checked
- Shipped
Description
The Seikomariner Custom Diver in Blue Ocean Dial is the kind of Seiko mod that earns a second glance from people who know watches. The Ocean dial — a layered, water-inspired blue that shifts between teal and deep navy depending on the light — is the centrepiece, framed by a 40 mm 316L stainless steel case and a matching steel bracelet that sits flush from every angle. This is a sport diver built for the collector who wants something genuinely custom, not just a re-bezel.
Movement
Power comes from the Seiko NH35 automatic with hacking and hand-winding. At approximately 12 mm thick and 40 mm across, the case is slim enough to slip under a shirt cuff when the occasion demands. The bracelet adjusts from roughly 14.5 cm to 22 cm via the included sizing tool — no watchmaker visit required.
Case & Crystal
Case and bracelet are both 316L stainless steel — one of the more corrosion-resistant alloys you will find at this price point. The sapphire crystal resists daily scratching, and water resistance is rated to 5 ATM: safe for hand washing, rain, and casual splashes. Every watch is assembled and quality-checked before it leaves the workshop.
Dial & Design
The Ocean dial is offered with or without a logo — a genuine choice rather than an afterthought. Clean indices sit against the blue background with strong contrast for quick reading in motion. The design language is purposeful: a sport diver that reads as confident without being loud. Choose the variant that fits how you want the dial to look.
On the Wrist
The 40 mm case and 12 mm profile make this a comfortable all-day piece. The 316L bracelet adjusts smoothly and the security clasp stays locked during activity. A free bracelet adjustment tool ships with every watch so you can resize at home in minutes without tools you do not already own.
Why MedoMods
Each Seikomariner is assembled and quality-checked by MedoMods before dispatch. Worldwide shipping with tracking – within the EU: no surprise customs charges on delivery. You receive a genuinely handcrafted Seiko mod — not a factory replica — with a movement and materials specification that justify every euro of the price.
Case diameter: 40 mm (excluding crown)
Thickness: approx. 12 mm
Movement: Seiko NH35 Automatic – hacking & hand-winding
Crystal: Sapphire, anti-scratch
Case: 316L Stainless Steel
Bracelet: 316L Stainless Steel, adjustable approx. 14.5 cm – 22 cm
Water resistance: 5 ATM
Included: Free bracelet adjusting tool
Ordering and delivery
- Every watch comes with a 2-year warranty from delivery. It covers manufacturing defects and functional problems under normal use. It doesn't cover scratches, damage from opening the watch, or water damage.
- 10–12 days after ordering
- 14-day withdrawal period. The period starts on receipt. For deliveries to the UK, US and Australia, we offer 14-day returns.
Specifications
- Movement
- NH35 Automatic
- Crystal
- Sapphire Crystal
- Water resistance
- 5 ATM
- Movement
- NH35 AutomaticAutomatic: winds itself as you wear it, no battery.
- Crystal
- Sapphire CrystalFar more scratch-resistant than mineral glass.
- Material
- 316L Stainless Steel
- Water resistance
- 5 ATMHand washing, rain, a short swim: yes. Diving, hot showers, sauna: no.
- Strap
- Oyster Bracelet
- Case back
- Exhibition CasebackShows the movement at work.
Shipping & delivery
- Standard shipping is free, whatever the order value.
- Every piece is built to order. Delivery worldwide takes an estimated 10–12 calendar days from order.
- Priority Build is an optional extra for €9.99, chosen on the product page: your order is prioritized in production.
- Within the EU, no import duties and no import VAT apply.
- Outside the EU (e.g. Norway, Switzerland, the United Kingdom, the USA), import duties, import VAT and customs clearance fees may be levied in the country of destination. They are not included in the price and are borne by the buyer.
- Once your order has shipped, you’ll receive the tracking number by email.
Secure payment
VISAPayPayPalKlarnaAMEX
Returns & warranty
- Our refund policy explains the 14-day right of withdrawal and our additional 14-day return offer from receipt for deliveries to the UK, USA and Australia.
- You bear the direct cost of returning the goods.
- The statutory warranty rules apply.
FAQ
What is a Seiko mod?
A Seiko mod is a modified watch that uses an authentic Seiko movement, combined with third-party high-quality parts. Most of our watches come in stainless steel with sapphire crystal.
How long will it take to receive my watch?
It usually takes 10–12 days from order to delivery. The reason: we build every watch by hand only after you order it. It then goes through quality control, and only after that do we ship it. With Priority Build (an optional extra for €9.99, chosen on the product page) your watch moves to the front of the bench.
Can I customize the logo or remove it?
Absolutely. Send us an email with your order number and full name after ordering, stating your desired design or that you want to remove the logo. You can also leave a note at checkout, or contact us before ordering.
Do you offer a warranty?
Yes. Every watch comes with a 2-year warranty from delivery. It covers manufacturing defects and functional problems under normal use. It doesn't cover scratches, damage from opening the watch, or water damage. If your watch is rated 5 ATM, hand-washing and rain are fine. Avoid diving, hot water and showering.
Is MedoMods a legitimate shop?
MedoMods is run by AM GbR, based in Leimen near Heidelberg, Germany. Our address and VAT ID are in the legal notice. You pay through Stripe, for example by card, PayPal or Klarna, and your card details never reach us. For deliveries to the UK, USA and Australia, we offer 14-day returns from delivery. We do not charge an additional restocking fee. We issue refunds within 4 calendar days after receiving the return. Every watch comes with a 2-year warranty. You can find our seller ratings on eBay.
Why are your watches cheaper than those in other shops?
We push prices down as much as we can. We believe many comparable watches are overpriced because shops bundle extras (like extra straps) into the price. We let you choose what you want, so you only pay for what you actually need.
Do you use genuine Seiko movements?
Yes. We source from suppliers who sell authentic Seiko movements. The specific movement is listed on each model’s product page. If you suspect that your watch contains the wrong movement or a non-genuine one, contact us with your order number and a description.
Are the watches hand-built?
Yes — all our watches are built by hand.
Manufacturer & product safety
- Manufacturer
- AM GbR, trading as “MedoMods”, Danziger Straße 6, 69181 Leimen, Germany
info@medomods.com - Product
- Seikomariner | Custom Diver Mod Blue “Ocean” Dial
What our customers say
MedoMods · 4.6 / 5 · 11 customer reviews
- Customer review
MedoMods · 5.0 / 5 · 1 Customer review
„Un detalle me llamó la atención en las fotos: el tono azul y el estilo de buceo. En la muñeca el conjunto se ve aún más equilibrado.“
Marta Romero
Spain
- Customer review
MedoMods · 5.0 / 5 · 1 Customer review
„Jeg var redd den bare ville se bra ut på bilder. På nært hold liker jeg spesielt den sportslige dykkerstilen og den blå fargen.“
Tobias Solberg
Norway
- Customer review
MedoMods · 4.0 / 5 · 1 Customer review
„Nach den ersten Tagen gefällt mir vor allem die Kombination: die sportliche Diver-Optik und die blaue Farbgebung. Die Uhr ist präsent, ohne zu viel zu sein.“
Simon Wyss
Switzerland
The craft behind it
Assembled by hand.Inspected in Germany.
Every watch is assembled individually, regulated and inspected before it ships.
A look inside the workshop
