Omega Seamaster Diver 300m Seamaster Diver 300M Master Co-Axial 42 No-Date Stainless Steel / Black - Orange / Mesh

Reference 210.30.42.20.01.018

Omega Seamaster Diver 300M Master Co-Axial 42 No-Date Stainless Steel / Black - Orange / Mesh

About this watch

The OMEGA Seamaster Diver 300M 210.30.42.20.01.018 debuted in 2025. This model is part of the updated Diver 300M generation, featuring a black aluminium dial with orange accents, including the central seconds hand, quarter-hour indexes, and Seamaster logo. The oxalic anodised aluminium bezel ring includes a diving scale in white Super-LumiNova, complementing the dial’s rhodium-plated skeletonised hands and indexes, also filled with white Super-LumiNova. The 42 mm stainless steel case is equipped with a domed sapphire crystal, helium escape valve at 10 o’clock, and transparent case back. It houses the Co-Axial Master Chronometer calibre 8806, certified by METAS for precision, magnetic resistance, and overall performance. This version is fitted with a stainless steel mesh bracelet and folding clasp. A second version with orange rubber strap is also available.

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Specifications

Brand

Omega

Family

Seamaster Diver 300m

Model

Seamaster Diver 300M Master Co-Axial 42 No-Date Stainless Steel / Black - Orange / Mesh

Reference

210.30.42.20.01.018

Movement

8806

Movement Features

Hours, Minutes, Seconds
Chronometer, Co-Axial Escapement

Case

42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Omega Seamaster Diver 300M 212.30.41.20.03.001 – Blue No-Wave 41mm– Box & Papers - $3499 Shipped

Omega - 212.30.41.20.03.001 · $3,499

For sale is a 2018 Omega Seamaster Diver 300M with the blue no-wave dial.

Condition: Light wear throughout, no dings on case, caseback, or bezel
Case diameter: 41mm
Water resistance depth rating: 300m
Movement type: Co-Axial Calibre 2500

Posted at

Jan 15, 2026, 12:47 AM

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Omega Seamaster Diver 300M “Seaweed” Green 42mm - 210.30.42.20.10.001 – 2024 – Full Set - $5449 Shipped

Omega - 210.30.42.20.10.001 · $5,449

A 2024 Omega Seamaster Diver 300M 'Seaweed' in excellent condition, featuring a green ceramic wave dial and 42mm stainless steel case.

Condition: Excellent condition, light handling marks on bracelet only
Case size: 42mm diameter
Bracelet length: full length steel bracelet
Strap included: bonus green rubber strap

Posted at

Jan 15, 2026, 12:42 AM

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OMEGA Seamaster Diver 300M 210.30.44.51.01.001 $5250 plus label

OMEGA - 210.30.44.51.01.001 · $5,250

This OMEGA Seamaster Diver 300M Chronograph is a waterproof watch with a clean crystal and bezel, and comes with various accessories.

Condition: good pre-owned condition
Case Sides Condition: worn
Crystal Condition: clean
Bezel Condition: clean

Posted at

Jan 14, 2026, 2:40 PM

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Strapify King Mesh bracelet - 20mm fits Omega Seamaster Diver 300m

· $100

This is a mesh bracelet from Strapify.com, specifically designed for the Omega Seamaster Diver 300m with 20mm lugs. It features high-quality 904L stainless steel and a secure folding deployant clasp.

Condition: Like new
Material: 904L grade stainless steel
Thickness: 3mm (near lugs), 2.5mm (near buckle)
Length: 95mm x 85mm

Posted at

Jan 13, 2026, 4:38 PM

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Strapify King Mesh bracelet - 20mm fits Omega Seamaster Diver 300m

This listing does not contain any information about a watch.

Posted at

Jan 13, 2026, 4:37 PM

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📣🚨Omega Seamaster Diver 300M Black on Rubber Strap $4295 shipped🚨📣

Omega - 210.32.42.20.01.001 · $4,295

This Omega Seamaster Diver 300M is a 42mm watch in very good condition, featuring a black dial and rubber strap.

Condition: very good pre-owned
Case size: 42mm diameter
Includes: complete set with receipts

Posted at

Jan 12, 2026, 4:07 PM

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📣🚨Omega Seamaster Diver 300M Black on Rubber Strap $4295 shipped🚨📣

Omega - 210.32.42.20.01.001 · $4,295

This Omega Seamaster Diver 300M is a 42mm case size watch featuring a black finish on a rubber strap.

Condition: very good pre-owned
Case Size: 42mm diameter
Includes: complete set with receipts

Posted at

Jan 12, 2026, 3:22 PM

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No Date Omega Seamaster Diver 300M - Full Set 2025

Omega - Seamaster Diver 300M No Date · $5,200

Up for sale is my No Date SMP 300, purchased directly from Omega Boutique. This watch comes with a complete set, including the original Omega rubber strap with deployant clasp, both boxes, and 3 cards.

Condition: Mint condition
Purchase Date: purchased directly from Omega Boutique
Warranty Card Date: dated 3/29/2025
Included Accessories: complete set, original Omega rubber strap with deployant clasp, both boxes, and 3 cards

Posted at

Jan 11, 2026, 10:28 AM

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Omega Seamaster Diver 300M Green Dial – 2025 Like New, Partially Stickered – Ref. 210.30.42.20.10.001

Omega - 210.30.42.20.10.001 · $5,200

The listing is for an Omega Seamaster Diver 300M with a green dial, described as like new and partially stickered.

Condition: Like New, Partially Stickered
Images: [https://imgur.com/a/xenK7E3](https://imgur.com/a/xenK7E3)

Posted at

Jan 8, 2026, 6:25 PM

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