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

Reference 210.30.42.20.06.001

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

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is a stunning piece of horological craftsmanship that resonates with both watch enthusiasts and casual wearers alike. With its striking grey dial and robust construction, this model blends elegance with functionality. The design of the Seamaster Diver 300M is a perfect marriage of style and utility, featuring a 42 mm round case made from high-quality stainless steel and a ceramic bezel with a rotating 0-60 dive scale. At the core lies the Omega Caliber 8800, a self-winding movement certified as a Master Chronometer, guaranteed to provide precision and performance. With its impressive water resistance of up to 300 meters and Co-Axial escapement reducing friction between moving parts, this watch is built to last. It's an experience on your wrist that combines functionality with aesthetic appeal.
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MSRP: $5,900
Market Price: $3,814

Key Features

  • 42mm round case made from stainless steel
  • Ceramic bezel with rotating 0-60 dive scale
  • Omega Caliber 8800 self-winding movement
  • Master Chronometer certification
  • 300m water resistance
  • Co-Axial escapement reducing friction between moving parts
  • Sapphire crystal glass scratch-resistant

Specifications

Brand
Omega
Family
Seamaster Diver 300m
Model
Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Grey / Bracelet
Reference
210.30.42.20.06.001
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
42mm
Dial Color
Grey
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS][US] Omega Seamaster SMP300 - Silver Dial - 42mm - 210.30.42.20.06.001

[US] Omega Seamaster SMP300 - Silver Dial - 42mm - 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,675
This Omega Seamaster SMP300 features a 42mm silver dial and is in excellent working order.

  • Condition: Fantastic condition with minor hairlines
  • Case size: 42mm
  • Diameter: 42mm
Posted at
Apr 7, 2026, 7:57 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001

Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,800
a Seamaster 300m with box and cards, available for sale

  • Box Papers: yes
  • Location: NJ USA
Posted at
Apr 4, 2026, 10:04 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Seamaster SMP300 - Silver Dial - 42mm - 210.30.42.20.06.001

[US] Omega Seamaster SMP300 - Silver Dial - 42mm - 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,700
Up for sale is an Omega Seamaster SMP300 - Silver Dial - 42mm watch that functions perfectly mechanically.

  • Condition: Fantastic condition
  • Case size: 42mm diameter
  • Links: 10 full links
Posted at
Mar 31, 2026, 8:26 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Professional 300M 42mm 210.30.42.20.06.001 | 2025 Box and Papers

Omega Seamaster Professional 300M 42mm 210.30.42.20.06.001 | 2025 Box and Papers

Omega - 210.30.42.20.06.001 · $4,550
A Omega Seamaster Professional 300M in 2025 condition, with a slight wear on the polished parts of the case. It features a Master Chronometer and includes various accessories such as a card holder and double-boxed packaging.

  • Condition: Excellent Pre-Owned Condition with slight wear on polished parts of case
  • Service History: +5 s/d 340+ AMP
  • Links: 10.5 Links
Posted at
Mar 30, 2026, 9:28 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001

Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,900
A Omega Seamaster 300m is being sold with its box and cards.

  • Box: true
  • Cards: true
Posted at
Mar 27, 2026, 5:57 PM
Active
View listing on r/WatchExchange
Omega Seamaster Diver 300m Chrome Grey 210.30.42.20.06.001 + Straps Warranty

Omega Seamaster Diver 300m Chrome Grey 210.30.42.20.06.001 + Straps Warranty

Omega - 210.30.42.20.06.001 · $3,950
This Omega Seamaster Diver 300m features a stunning PVC Chrome Grey dial, comes in great shape with only light signs of wear, and is delivered as a fully complete 2019 dated set.

  • Condition: near mint condition
  • Diameter: 42mm
  • Depth rating: 300m
  • Warranty: 1 year
Posted at
Feb 20, 2025, 11:35 AM
Active
View listing on RolexForums
[WTS] Omega Seamaster Diver 300M SMP 300M - in warranty

Omega Seamaster Diver 300M SMP 300M - in warranty

Omega - SMP 300M · $4,250
This Omega Seamaster Diver 300M is a well-maintained timepiece that runs perfectly and keeps excellent time. It comes with the original box, booklet, warranty card, and extra links.

  • Condition: Great condition with minor scratches/scuffs
  • Depth rating: 300m
  • Warranty expiration date: August 2027
  • Accessories included: original box, booklet, warranty card, extra links
Posted at
Apr 7, 2026, 8:10 PM
Active
View listing on r/WatchExchange
[WTS] BNIB Omega Seamaster Diver 300M 210.30.42.20.04.001 $5,325

BNIB Omega Seamaster Diver 300M 210.30.42.20.04.001 $5,325

Omega - 210.30.42.20.04.001 · $5,325
This Omega Seamaster Diver 300M is a high-end dive watch featuring a black ceramic bezel, white ceramic dial, and a sapphire-crystal caseback.

  • Condition: Brand new in box, no issues
  • Case Diameter: 42mm
  • Lug Width: 20mm
  • Water Resistance: 300m depth rating
Posted at
Apr 7, 2026, 11:30 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Diver 300m, $2800

Omega Seamaster Diver 300m, $2800

Omega - 2225.80.00 · $2,800
A preowned Omega Seamaster Diver 300m, complete with box, warranty, and manuals.

  • Condition: Preowned
  • Box And Papers: yes
  • Warranty: 2011
  • Shipping: from Singapore Office
Posted at
Apr 7, 2026, 10:24 AM
Active
View listing on r/WatchExchange