Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer Chronograph Titanium / Grey / Bracelet

Reference 215.90.46.51.99.001

About this watch

The Omega Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer Chronograph is a luxury timepiece that combines precision, style, and adventure. Its striking grey titanium case and bold sporty look make it a standout choice for watch enthusiasts and casual wearers alike. The watch measures 45.5 mm in diameter and features a light and strong titanium bracelet with an adjustable link design for comfort. Powered by the Omega caliber 9900 automatic movement, this timepiece boasts a Co-Axial Escapement and METAS certification for accuracy and magnetic resistance. With a water resistance of up to 600 meters, it's perfect for diving and everyday use. The unidirectional rotating bezel allows for accurate tracking of dive times, while the chronograph feature with column wheel mechanism enables precise timing. The dial is protected by scratch-resistant sapphire crystal and features a modern grey color with mixed indexes for easy readability. Wearing the Seamaster Planet Ocean 600M is a delight, as it's both comfortable and stylish, making it a versatile accessory that can be paired with casual or formal attire.
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Key Features

  • 45.5mm diameter titanium case
  • Co-Axial Escapement movement
  • METAS certified for accuracy and magnetic resistance
  • 600m water resistance
  • Unidirectional rotating bezel
  • Chronograph feature with column wheel mechanism
  • Scratch-resistant sapphire crystal dial

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer Chronograph Titanium / Grey / Bracelet
Reference
215.90.46.51.99.001
Movement
9900
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
  • Chronometer, Co-Axial Escapement
Case
45.5mm
Dial Color
Grey
Crystal
Sapphire
Water Resistance
600

Current Listings

[WTS] 2024 Omega Seamaster Planet Ocean 600M 45.5MM Titanium 215.90.46.51.99.001

2024 Omega Seamaster Planet Ocean 600M 45.5MM Titanium 215.90.46.51.99.001

2024 Omega Seamaster Planet Ocean 600M Chronograph with full titanium construction, grey dial, and Master Chronometer chronograph movement.

  • Condition: mint mint condition
  • Case size: 45.5mm diameter
  • Water resistance: 600m depth rating
  • Movement: Cal. 9900 automatic co-axial master chronometer
Posted at
May 17, 2026, 7:22 PM
Active
[WTS] Omega Seamaster Planet Ocean 600M 42mm | 232.30.42.21.01.003 | 2023 Full Set

Omega Seamaster Planet Ocean 600M 42mm | 232.30.42.21.01.003 | 2023 Full Set

This Omega Seamaster Planet Ocean 600M features the in-house Omega Co-Axial Caliber 8500 automatic movement, ceramic bezel, and impressive 600 meters of water resistance.

  • Condition: Excellent Condition
  • Movement: in-house Omega Co-Axial Caliber 8500
  • Depth rating: 600m
Posted at
May 25, 2026, 6:20 PM
Active
[WTS] Omega Seamaster Planet Ocean 232.30.46.21.01.001 – 45.5mm – 2015 – Full Set - 3550

Omega Seamaster Planet Ocean 232.30.46.21.01.001 – 45.5mm – 2015 – Full Set - 3550

A bold dive watch with strong wrist presence, built for durability and performance, with a black dial and Omega's proven Co-Axial movement.

  • Condition: Good overall condition
  • Case size: 45.5mm diameter
  • Movement: Omega Co-Axial automatic movement
Posted at
May 25, 2026, 11:54 AM
Active
[WTS] 2026 Omega Seamaster Planet Ocean 600M Black Dial Box Papers + OEM Bracelet!

2026 Omega Seamaster Planet Ocean 600M Black Dial Box Papers + OEM Bracelet!

2026 Omega Seamaster Planet Ocean 600M in excellent like-new condition, comes with inner & outer box, warranty card, and manual.

  • Condition: Excellent like-new condition
  • Box Papers: yes, inner & outer box, warranty card, and manual
  • Bracelet: stainless steel
  • Strap: rubber
Posted at
May 24, 2026, 10:36 AM
Active
[wts] Omega Seamaster Planet Ocean GMT 43.5mm 232.32.44.22.01.002 UnderWarranty

Omega Seamaster Planet Ocean GMT 43.5mm 232.32.44.22.01.002 UnderWarranty

This Omega Seamaster Planet Ocean GMT is a 43.5mm watch with a factory warranty valid through November 2027.

  • Condition: Excellent condition
  • Diameter: 43.5mm
Posted at
May 23, 2026, 8:28 AM
Active
[wts] Omega Seamaster Planet Ocean 8500 232.30.46.21.01.001 45.5mm

Omega Seamaster Planet Ocean 8500 232.30.46.21.01.001 45.5mm

A 45.5mm Omega Seamaster Planet Ocean with a full set.

  • Condition: Excellent condition and full set
  • Case Size: 45.5mm
Posted at
May 23, 2026, 8:22 AM
Active
[wts] Omega Seamaster Planet Ocean GMT GoodPlanet 232.30.44.22.03.001 43.5mm

Omega Seamaster Planet Ocean GMT GoodPlanet 232.30.44.22.03.001 43.5mm

A 43.5mm Omega Seamaster Planet Ocean GMT GoodPlanet watch, in excellent condition, with boxes and papers.

  • Condition: Excellent condition
  • Diameter: 43.5mm
Posted at
May 23, 2026, 8:20 AM
Active
[WTS][US] Omega Seamaster Planet Ocean Chrono 600m - Black Dial - 45.5mm - 215.30.46.51.01.001 - Full Set

[US] Omega Seamaster Planet Ocean Chrono 600m - Black Dial - 45.5mm - 215.30.46.51.01.001 - Full Set

This Omega Seamaster Planet Ocean Chrono is a high-end diver's watch featuring a black dial and 600m depth rating.

  • Condition: Fantastic condition with minor hairlines
  • Case size: 45.5mm diameter
  • Water resistance: 600m
Posted at
May 23, 2026, 5:26 AM
Active
[WTS] Omega Seamaster Planet Ocean 232.30.38.20.01.001 38mm Box and Papers - $2,990

Omega Seamaster Planet Ocean 232.30.38.20.01.001 38mm Box and Papers - $2,990

Up for sale is my Omega Seamaster Planet Ocean 232.30.38.20.01.001, a 38mm automatic watch with an Omega 8520 movement.

  • Condition: Great condition for its age, minimal marks/hairlines
  • Case Size: 38mm diameter
  • Movement: Omega 8520, automatic
  • Bracelet Length: fits up to 7-7.25 inch wrists depending on wrist shape
Posted at
May 22, 2026, 4:13 AM
Active