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Buy Harry Winston Ocean 400/MATTZ45W | 45 mm, Used (Very good) — Switzerland
In Stock
Original box, original papers

Harry Winston Ocean

Reference number
400/MATTZ45W
Case diameter
45 mm
Dial
Grey
Case material
White gold
Condition
Used (Very good)
Bracelet color
Black
USD 57,370
Free insured shipping to within 5 days
Contact via WhatsApp

Harry Winston Ocean Features

Dial
Grey
Clasp
Fold clasp
Model
Ocean
Gender
Men's watch/Unisex
Crystal
Sapphire crystal
Location
Switzerland, Geneve
Movement
Automatic
Condition
Used (Very good)
Availability
Item is in stock
Listing code
R1GLH4
Case diameter
45 mm
Case material
White gold
Dial numerals
Arabic numerals
Bezel material
White gold
Bracelet color
Black
Clasp material
White gold
Reference number
400/MATTZ45W
Water resistance
3 ATM
Bracelet material
Leather
Scope of delivery
Original box, original papers
Year of production
Unknown
Dealer product code
SB190326.640123001
Power reserve
42 h
System: Supplier
Watchoyster
Power reserve
42 h

Product Description

This Used (Very good) Harry Winston Ocean 400/MATTZ45W features a 45 mm White gold case with a Grey dial, powered by an Automatic movement.

Produced in Unknown, this piece comes with Original box, original papers and is fitted with a Leather bracelet secured by a Fold clasp. The case offers 3 ATM water resistance and is protected by a Sapphire crystal.

Every watch sold by WATCHOYSTER is physically inspected and authenticated in-house by our certified watchmaker before listing, verified against The Watch Register, and backed by our warranty and 14-day return policy. This Ocean ships fully insured from our Geneva facility.

Looking to buy a pre-owned Harry Winston Ocean in Used (Very good) condition? This 400/MATTZ45W is available now — contact us via WhatsApp for more photos or questions before you buy.

Watch Certificate™

Watch Certificate™

For maximum security and transparency, a Watch Certificate™ can be provided upon request. This independent document confirms the authenticity of the timepiece and protects you from counterfeit or altered watches.

International Certification

International Certification

We cooperate with the global organization The Watch Register®. Upon request, every watch - whether new or pre-owned — can be supplied with an official certificate from this international authority.

Insured delivery

Insured delivery

All orders are shipped with full insurance, ensuring that both domestic and international shipments are safe and worry-free.

14-day return policy

14-day return policy

You may return the watch within 14 days if it differs from the description or photos, or if there is a defect not mentioned.

Inspected by Certified Watchmaker

Inspected by Certified Watchmaker

All our timepieces are thoroughly inspected by our certified watchmaker to ensure authenticity and perfect working condition. Every watch we offer is guaranteed to be 100% original.

Personal collection

Personal collection

When preferred, collect your watch from our private showroom in Geneva. A secure and discreet handover, designed for your comfort and peace of mind.

How Returns Work

Contact Us

1. Contact Us

Contact us Inform us about the return by writing via WhatsApp — it’s the fastest and easiest way.

Secure Return

2. Secure Return

Secure return We will provide you with an insured shipping label so you can safely return your watch.

Money Back

3. Money Back

Money back As soon as we receive the watch, you will get a bank transfer refund without delay.

Harry Winston Ocean
Security & Warranty

Before You Buy

Harry Winston Ocean

Authenticity
Flexible payment options
Insured shipping

Before You Buy

Key details about authentication, financing, viewing, delivery, and condition.

Yes. This Ocean 400/MATTZ45W has been physically inspected in-house by our certified watchmaker, covering movement accuracy, case integrity of the 45 mm White gold case, Grey dial condition, and overall authenticity. Every serial number is verified against The Watch Register before listing. This piece carries our 12-month warranty and is covered by our 14-day return policy if it does not correspond to its description.

0% financing is available only for selected watches priced up to CHF 10,000. Eligible models are clearly marked with a financing badge on the product page.

If a watch does not display the financing badge, or its price exceeds CHF 10,000, interest-free financing is not available for that model.

For eligible watches, financing is available to clients residing in Switzerland, with terms from 3 to 24 months. Approval is typically completed within a few minutes during checkout by HeyLight partner bank.

Can I view the watch in person before buying?

As we are based in the secure Geneva Free Zone, we generally do not offer pre-purchase viewings and operate primarily as an online retailer due to security and insurance requirements.

A limited number of watches are available for in-person inspection by appointment at our office. Availability depends on the specific model. Some watches can be viewed before purchase, while others are available for collection only after payment.

Please contact us via WhatsApp with the watch details, and we will confirm whether the model is available for viewing or collection only.

This Ocean 400/MATTZ45W ships fully insured from our Geneva facility. Standard delivery across Switzerland takes 4 to 5 business days. International shipments to 50+ countries typically arrive within 7 business days. You receive tracking information at the point of dispatch. Original box, original papers is included with this piece.

This Ocean is listed in Used (Very good) condition, assessed across case, dial, bezel, crystal, and bracelet by our in-house certified watchmaker before listing. Real photographs on this page reflect the actual state of the watch. Original box, original papers is included. A Watch Certificate digital passport is available on request for independent verification of the watch's details and service history.

Customer Reviews

Real impressions from clients who worked with our team and received their watches.

  • JG
    Joshua G.
    CH · 24.03.2024
    Verified
    5.0

    The watch arrived faster than announced and was very well packaged. As shown in the description and pictures, there was not a scratch to be seen. I was very satisfied.

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • CB
    C B.
    CH · 16.12.2024
    Verified
    5.0

    Responsive, timely, left nothing to chance very good experience.

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • TG
    Thomas G.
    CH · 08.09.2025
    Verified
    5.0

    100%—an excellent rating 👌

    Article 5.0
    Average 5.0
    Delivery 5.0
  • SJ
    Stephen J.
    US · 04.03.2025
    Verified
    5.0

    Great watch. Great service.

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • TP
    Tomasz P.
    CH · 12.12.2025
    Verified
    5.0

    Excellent transaction for the watch purchase! The seller is highly trustworthy and provided an attractive price. Communication was prompt and ongoing throughout the process, and the item was shipped quickly. Absolutely no reservations—a seamless and successful purchase. Highly recommended!

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • BB
    Bart B.
    NL · 01.12.2025
    Verified
    5.0

    Great service and communication. All perfect. No remarks. Great watch. Very happy. Great price.

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • CT
    Christos T.
    CY · 31.01.2026
    Verified
    5.0

    Highly professional dealer. Everything was exactly as in the photos. The watch was well wrapped and protected. They kept me informed at all stages from Purchase to delivery

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • TK
    Tarik K.
    NL · 12.11.2025
    Verified
    5.0

    Great experience. Fast handling and communication. Would reccomend

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • JT
    Juan T.
    US · 17.02.2025
    Verified
    5.0

    This vintage Rolex watch was exactly as advertised. It was in perfect mint condition with all the accessories shown on the photos (box, papers, manuals, even the tags). The shipping was very fast. It left from Geneva on Monday and it arrived in New York City by that Wednesday. The packaging was very good. The communication with the seller during and after the sale was perfect. I can’t wait to find and buy another watch from this seller.

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
  • JE
    Janos E.
    CH · 17.12.2025
    Verified
    5.0

    I purchased my Blancpain Bathyscaphe Titanium from Wachoyster on Chrono24 and the entire process was excellent. Communication was clear and professional, the watch arrived exactly as described, and all documentation was complete and authentic. The dealer was responsive and trustworthy throughout, making the transaction smooth and worry‑free. I highly recommend Wachoyster to anyone looking for a reliable and professional experience on Chrono24.

    Article 5.0
    Average 5.0
    Delivery 5.0
    Communication 5.0
Customer Reviews

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