Omega Seamaster Diver 300m Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Black / Bracelet

Reference 210.30.42.20.01.001

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is a masterpiece of watchmaking, blending luxury and functionality in a stunning package. Crafted from premium materials, this timepiece boasts exceptional build quality, Master Chronometer certification for accuracy, and an impressive water resistance of 300 meters. Its versatile design seamlessly transitions from casual to formal wear, while the comfortable fit with an adjustable bracelet ensures all-day wearability. This watch is not just a statement piece; it's a testament to Omega's commitment to excellence.
Buy Now on Jomashop
This is an affiliate link
MSRP: $5,900
Market Price: $4,102

Key Features

  • 42mm round case made from stainless steel
  • Black ceramic bezel with 0-60 scale
  • Sapphire crystal glass for added protection
  • Master Chronometer certification for accuracy and performance
  • Water resistance of 300 meters (1,000 feet)
  • Self-winding movement powered by Omega caliber 8800
  • Co-Axial escapement with reduced friction and increased accuracy

Specifications

Brand
Omega
Family
Seamaster Diver 300m
Model
Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Black / Bracelet
Reference
210.30.42.20.01.001
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Omega Seamaster 300M 42mm Black 210.30.42.20.01.001 ( new / 2025 / box and papers )

Omega Seamaster 300M 42mm Black 210.30.42.20.01.001 ( new / 2025 / box and papers )

Up for sale is a brand new Omega Seamaster 300 with a 42mm stainless steel case and Master Co-Axial Movement.

  • Condition: Brand new
  • Case size: 42mm
  • Movement: 8800 Master Co-Axial
Posted at
Apr 23, 2026, 1:44 PM
Active
Omega Seamaster 300 - Black Wave Dial - 210.30.42.20.01.001 ( new / 2025 )

Omega Seamaster 300 - Black Wave Dial - 210.30.42.20.01.001 ( new / 2025 )

This Omega Seamaster 300 is a brand new timepiece with a black wave dial, featuring a 42mm stainless steel case and the Master Co-Axial Movement. It comes complete with all original boxes, papers, booklets, hang tag, and an Omega warranty card dated January 2025.

  • Condition: Brand new
  • Case Size: 42mm
  • Movement: 8800 Master Co-Axial
Posted at
Jan 31, 2025, 3:09 PM
Active
[WTS] 2024 Omega Seamaster Diver 300M 210.30.42.20.10.001 Green Seaweed Full Set - $5,395

2024 Omega Seamaster Diver 300M 210.30.42.20.10.001 Green Seaweed Full Set - $5,395

A 2024 Omega Seamaster Diver 300M in Green Seaweed, a high-end diver's watch featuring a 42mm case and excellent condition.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2024
  • Depth rating: 300m
Posted at
Apr 30, 2026, 9:58 AM
Active
[WTS] Omega Seamaster Diver 300M Grey Dial | Ref. 210.32.42.20.06.001

Omega Seamaster Diver 300M Grey Dial | Ref. 210.32.42.20.06.001

This Omega Seamaster Diver 300M features a grey laser-engraved wave dial paired with a ceramic bezel, and is powered by the Omega Co-Axial Master Chronometer movement.

  • Condition: Very good condition, showing normal signs of wear consistent with careful use.
  • Case size: 42mm diameter
  • Dial color: Grey
  • Bezel material: Ceramic
Posted at
Apr 28, 2026, 9:16 PM
Active
[WTS] Omega Seamaster Diver 300m Black Dial Steel No Wave Reference 212.30.41.20.01.003 Box and Card dated 2020

Omega Seamaster Diver 300m Black Dial Steel No Wave Reference 212.30.41.20.01.003 Box and Card dated 2020

A black dial Omega Seamaster Diver 300m in excellent condition, featuring a 41mm case and a clean sapphire crystal.

  • Condition: Excellent
  • Water Resistance: 300m
  • Case Size: 41mm
Posted at
Apr 28, 2026, 2:24 PM
Active
[WTS] Omega Seamaster Diver 300M James Bond 60th Anniversary 210.30.42.20.03.002 $6,999

Omega Seamaster Diver 300M James Bond 60th Anniversary 210.30.42.20.03.002 $6,999

This Omega Seamaster Diver 300M James Bond 60th Anniversary watch is a special edition launched to celebrate six decades of 007 on screen. It features a reliable Omega Calibre 8806 movement that is COSC and METAS certified, with resistance to magnetic fields up to 15,000 gauss.

  • Condition: Preowned - Excellent
  • Movement: Omega Calibre 8806
  • Certifications: COSC, METAS certified
  • Magnetic field resistance: 15,000 gauss
Posted at
Apr 28, 2026, 11:37 AM
Active
[WTS] Omega Seamaster Diver 300M 210.30.42.20.03.003 “Summer Blue” — 75th Anniversary, Cal. 8800, Fullset 2023 — $4,599 Shipped (Tariff Covered)

Omega Seamaster Diver 300M 210.30.42.20.03.003 “Summer Blue” — 75th Anniversary, Cal. 8800, Fullset 2023 — $4,599 Shipped (Tariff Covered)

Seamaster Diver 300M 'Summer Blue' edition, celebrating the brand's 75th anniversary, with Calibre 8800 movement and a full set of accessories for 2023.

  • Year: 2023
  • Movement: Cal. 8800
Posted at
Apr 28, 2026, 9:45 AM
Active
[WTS] Omega Seamaster Diver 300M 210.22.42.20.03.001 Two-Tone Blue Dial Full Set

Omega Seamaster Diver 300M 210.22.42.20.03.001 Two-Tone Blue Dial Full Set

A two-tone Omega Seamaster Diver 300M with a blue dial and matching blue rubber strap, featuring an automatic movement and a stainless steel and yellow gold case.

  • Condition: Very Good
  • Case size: 42mm diameter
  • Movement type: Automatic
  • Serial number status: Blurred in photos for security
Posted at
Apr 27, 2026, 9:48 AM
Active
[WTS] Omega Seamaster Diver 300M – Automatic 41mm – Electric Blue w/ Bond bracelet

Omega Seamaster Diver 300M – Automatic 41mm – Electric Blue w/ Bond bracelet

The Omega Seamaster Diver 300M features a stainless steel case, electric blue dial, and polished steel bezel on an Omega bracelet.

  • Condition: Excellent all-around condition
  • Movement: Omega caliber 1120 automatic movement
  • Water resistance: 300 meters
Posted at
Apr 26, 2026, 2:47 PM
Active