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.
Buy Now on Jomashop
This is an affiliate link

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

[WTS] Omega Seamaster 300M Black Aluminum / Orange 210.30.42.20.01.018 ( new / 2025 / box and papers )

Omega Seamaster 300M Black Aluminum / Orange 210.30.42.20.01.018 ( new / 2025 / box and papers )

Omega - 210.30.42.20.01.018 · $6,200
A brand new Omega Seamaster 300 with a 42mm stainless steel case, black aluminum dial and bezel with orange accents on a mesh bracelet.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement: 8806 Master Co-Axial Movement
Posted at
May 5, 2026, 11:21 AM
Active
View listing on r/WatchExchange
[WTS] 2025 Omega Seamaster Diver 300M 210.30.42.20.01.018 Full Set $6,250

2025 Omega Seamaster Diver 300M 210.30.42.20.01.018 Full Set $6,250

Omega - 210.30.42.20.01.018 · $6,250
A modern dive watch featuring a clean black dial configuration and full stainless steel bracelet, powered by the Omega Co-Axial Master Chronometer Calibre 8800.

  • Condition: Mint (pre-owned, minimal to no wear)
  • Movement: Omega Calibre 8800 Master Chronometer
  • Case size: 42mm diameter
  • Case material: Stainless steel
Posted at
May 2, 2026, 6:13 PM
Active
View listing on r/WatchExchange
[WTS] BNIB Omega Seamaster Diver 300M 210.30.42.20.04.001 $5,250

BNIB Omega Seamaster Diver 300M 210.30.42.20.04.001 $5,250

Omega - 210.30.42.20.04.001 · $5,250
This Omega Seamaster Diver 300M features a black ceramic bezel, polished white ceramic dial with laser-engraved waves and a date window at 6 o'clock, and is powered by the OMEGA Master Chronometer Calibre 8800. The watch includes a blue rubber strap and has a water resistance of 30 bar (300m).

  • Condition: Brand new in box
  • Case diameter: 42mm
  • Lug width: 20mm
  • Water resistance depth rating: 300m
Posted at
May 12, 2026, 4:56 PM
Active
View listing on r/WatchExchange
[WTS] OMEGA Seamaster Diver 300M Black Dial No Date, Bond Waves 210.32.42.20.01.003 + OEM Mesh Bracelet

OMEGA Seamaster Diver 300M Black Dial No Date, Bond Waves 210.32.42.20.01.003 + OEM Mesh Bracelet

Omega - 210.32.42.20.01.003 · $5,500
This Omega Seamaster Professional 300M features a modern case and movement with a vintage SMP dial feel, an aluminum bezel with lumed numbers, and comes as a complete set with various accessories.

  • Bracelet Type: OEM Mesh Stainless Steel
  • Included Accessories: Outer boxes, presentation box, hang tag, manual, wallet with all cards (warranty dated 11/2024), black rubber strap
Posted at
May 11, 2026, 8:43 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Diver 300M Chronograph 44mm Blue Wave Dial – Box, Papers, Active Warranty – 210.30.44.51.03.001

Omega Seamaster Diver 300M Chronograph 44mm Blue Wave Dial – Box, Papers, Active Warranty – 210.30.44.51.03.001

Omega - 210.30.44.51.03.001 · $7,795
A modern icon built for both adventure and everyday wear, the Omega Seamaster Diver 300M Chronograph combines serious capability with unmistakable wrist presence.

  • Condition: Excellent pre-owned condition
  • Case Size: 44mm
  • Movement: Omega Caliber 9900, automatic Co-Axial Master Chronometer chronograph, 60-hour power reserve
  • Bracelet Links: 12 links fitting an 8-8.5" wrist
Posted at
May 11, 2026, 4:51 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Diver 300M – Electric Blue – Automatic 41mm – Solid Gold Bezel

Omega Seamaster Diver 300M – Electric Blue – Automatic 41mm – Solid Gold Bezel

Omega - 2455.80 · $4,250
This Omega Seamaster Diver 300M features an iconic two-tone design with a stainless steel case, raised yellow gold bezel, and electric blue dial. It has a water resistance of 300 meters and is powered by the Omega caliber 1120 automatic movement.

  • Condition: Excellent all around condition
  • Movement: Omega caliber 1120 automatic movement
  • Water resistance: 300 meters
  • Bracelet type: two tone bracelet
Posted at
May 11, 2026, 2:04 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Diver 300M 210.30.42.20.03.001 42mm Blue Dial Box Papers 2022

Omega Seamaster Diver 300M 210.30.42.20.03.001 42mm Blue Dial Box Papers 2022

Omega - 210.30.42.20.03.001 · $4,450
This Omega Seamaster Diver 300M features a polished blue ceramic dial, date window at 6 o'clock, and a 42mm stainless steel case. It is powered by the Calibre 8800, an automatic Co-Axial Master Chronometer with a 55-hour power reserve.

  • Condition: Excellent pre-owned condition with faint wear on the case and bracelet
  • Case size: 42mm
  • Diameter: 42mm
  • Water resistance depth rating: 300m
Posted at
May 11, 2026, 10:49 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Diver 300M 210.22.42.20.03.001 Two-Tone Blue Dial 42mm Automatic Full Set

Omega Seamaster Diver 300M 210.22.42.20.03.001 Two-Tone Blue Dial 42mm Automatic Full Set

Omega - 210.22.42.20.03.001 · $5,999
This Omega Seamaster Diver 300M features a two-tone stainless steel and yellow gold case with a blue dial on a matching blue rubber strap, powered by an automatic movement.

  • Condition: Very good
  • Case size: 42mm diameter
  • Movement type: Automatic
  • Set included: Full set
Posted at
May 11, 2026, 8:22 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Diver 300M 🚨STEAL🚨

Omega Seamaster Diver 300M 🚨STEAL🚨

Omega - Diver 300M · $3,400
Up for sale is my Omega Seamaster Diver 300M in the gray dial/blue bezel configuration, coming on a blue OEM rubber strap and including box, extra black rubber strap, certificate of authenticity, and insured shipping.

  • Condition: like new
  • Case condition: near-mint
  • Strap type: rubber
  • Additional straps: 1 black non-OEM, 1 blue OEM
Posted at
May 9, 2026, 2:01 PM
Active
View listing on r/WatchExchange