Product Overview Omega Seamaster 300M Co-Axial Chronometer diving watch is a classic sports diving timepiece for daily wear and professional diving. 42mm ergonomic case, integrated stainless steel metal bracelet, and multiple dial & bezel color combinations to choose from. Every steel bracelet order comes with a free matching rubber strap for casual and diving replacement use. Premium Craft & Exterior Details 1. Ceramic Unidirectional Dive BezelBlack ceramic bezel with hand-filled white enamel diving scales, scratch-resistant and long-lasting color fastness. Ratchet single-direction counterclockwise rotation design for diving time counting. 2. Domed Sapphire CrystalCurved dome sapphire glass with anti-glare coating, effectively eliminating light reflection, clear dial reading under strong sunlight. 3. Wave Pattern Ceramic DialPolished ceramic dial engraved with iconic wave texture, date window at 6 o’clock. Rhodium-plated hollow hands and raised hour markers coated with Super-LumiNova dual-color luminous material, blue luminous for hours, green luminous for minute tracking diving oxygen time. Professional Diving Performance • 300M Deep Waterproof: Screw-down sealed crown + double waterproof gaskets, support real sea diving activities. • Helium Escape Valve: Conical shaped helium valve on the side, automatically release helium accumulated during saturation diving. • Transparent Case Back: Open case back design, clear view of the delicate automatic mechanical movement operation. Strap & Clasp Design Brushed stainless steel bracelet with side screw disassembly structure, consistent with classic design logic. Double push folding clasp with built-in extension adjustment system, easy to stretch the strap to fit thick diving suits during deep diving. Free matching rubber diving strap included with steel band orders. Product Specifications • Brand: OMEGA • Series: Seamaster Professional 300M • Case Diameter: 42mm • Waterproof Depth: 300 Meters Diving Grade • Crystal: Domed Anti-Reflective Sapphire Crystal • Bezel: Scratch Resistant Ceramic Bezel with Enamel Scale • Movement: Self-Winding Automatic Mechanical Movement • Core Functions: Hours, Minutes, Seconds, Date Display, Dual Color Luminous, Helium Escape Valve, Unidirectional Dive Bezel • Strap Options: Brushed Stainless Steel Bracelet / Rubber Diving Strap (Free Gift) • Case Material: Solid Stainless Steel / Two-Tone Rose Gold Steel • Dial Colors: Blue Wave Dial, White Dial, Grey Wave Dial, Black Dial, Green Wave Dial • Clasp: Double Push Fold Clasp with Dive Extension System Shipping & Customer Service Worldwide tracked shipping for all orders, tracking number will be provided once the parcel is dispatched. If you need full color catalog, real watch photos or function demonstration, contact our WhatsApp support team anytime.
Clear product tiers
Compare before you choose
“12A” and “7A” are this store’s internal configuration labels, not independent industry standards. Exact parts and test results must be confirmed on the individual QC record.
| Compare | Original retail reference | 12A Premium Build Most detailed | 7A Standard Build |
|---|---|---|---|
| Price | Verify with the brand or an authorised retailer | $810Confirm availability before payment | $485Current store price |
| Movement | Brand calibre; verify by reference | Automatic mechanical, selected finish | Reliable automatic movement; exact calibre confirmed before order |
| Materials | Verify on official model specification | Steel | 316L steel or listed material |
| Crystal | Verify on official model specification | Sapphire where listed | Mineral or sapphire; confirm by model |
| Accuracy | Brand specification | Measured during QC; result supplied for the individual watch | Measured during individual QC |
| Water resistance | Official rating, subject to service condition | Splash resistant only unless the individual QC report states otherwise | Splash resistant unless separately tested |
| QC evidence | Authorised retailer documentation | Photos, video and timing result | Photos and functional check |
Specifications
The details that matter
- Reference / SKU
- dlz1787455223308
- Case dimensions
- Confirm before order
- Movement
- Automatic mechanical
- Materials
- Steel
- Water use
- Splash resistant only unless the individual QC report states otherwise
- Package
- Protective travel packaging; presentation box only when listed
Movement information
See what powers the watch
Listed movement: Automatic mechanical.
Before shipping, ask for a clear caseback photo, a short running video and the timing-machine result. Decoration, rotor shape and bridge layout can vary by batch, so the QC image of the individual watch is the controlling reference.
- Movement and function check
- Time/date/chronograph test where applicable
- Timing rate and amplitude photo when available
- Rotor noise and winding feel checked
QC information
Approve the actual watch before dispatch
Your order enters a private QC record after availability is confirmed. The record should show the exact item, not catalogue imagery.
- 01
Order matched
Reference, colour, size and configuration are checked.
- 02
Visual inspection
Dial, hands, case, bracelet, clasp and markings are photographed.
- 03
Functional test
Movement, crown, date and model-specific functions are tested.
- 04
Your approval
QC photos/video are sent for approval before packing and tracking.
Packaging & shipping
A visible order timeline
QC in 2–4 business days; delivery commonly 7–14 business days after approval. Customs processing and remote destinations can add time. A presentation box changes parcel size and may ship separately; it is included only when the product page or QC record says so.
FAQ & verification
Questions to ask before paying
Is this sold as an authentic brand-manufactured watch?
No unless the listing explicitly provides verifiable provenance and authorised documentation. Store grade labels describe configurations; they are not authentication certificates.
How can I verify what I will receive?
Match the QC photos to the order reference. Request a dated video showing the dial, caseback, clasp, serial/marking areas, movement where accessible, and every function. Save the approved QC record.
Can a photo prove authenticity?
No. Photos can help confirm appearance and the shipped item, but authentication requires provenance and qualified physical inspection. Never rely on a logo, serial number or packaging alone.
What should I check in the timing result?
Confirm that the displayed watch is running, then review rate, amplitude and beat error. Results are a snapshot, not a lifetime guarantee, and can change with position, temperature and transport.
Is the watch safe for swimming?
Only if the individual watch has passed an appropriate pressure test and the result is documented. Otherwise treat it as splash resistant and keep it away from showers, pools and seawater.
When will the order ship?
QC in 2–4 business days; delivery commonly 7–14 business days after approval. Tracking is issued after QC approval and dispatch.
Purchase clarity
Nothing important should be assumed.
Confirm the configuration, exact price, included items, QC evidence, delivery estimate and after-sales terms in writing before payment.
Confirm this model
Reviews
There are no reviews yet.