Omega Seamaster Diver 300m Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Summer Blue / Bracelet
Reference 210.30.42.20.03.003
About this watch
The Omega Seamaster Diver 300M Master Co-Axial 42 is a masterpiece of engineering and design, blending elegance with robust functionality. Its stunning summer blue dial features a gradient finish, adding depth and character to the watch face. The case is crafted from stainless steel and ceramic, built to withstand underwater adventures. A rotating bezel allows for accurate dive time tracking, and a water resistance of up to 300 meters ensures it can endure ocean depths. At its heart lies the Omega caliber 8800 movement, a marvel of engineering with Co-Axial escapement, reducing friction and enhancing longevity and accuracy. Rigorously tested according to Master Chronometer certification, this watch is resistant to magnetic fields reaching 15,000 gauss and has a power reserve of 55 hours. The Seamaster Diver 300M comes with a stainless steel bracelet that complements the watch's aesthetics while providing a comfortable fit. Its versatility makes it suitable for various environments, from diving to formal events.
Key Features
- Stainless Steel and Ceramic Case
- Summer Blue Gradient Dial
- Omega Caliber 8800 Movement
- 300m Water Resistance
- Co-Axial Escapement
- Master Chronometer Certified
- 55 Hour Power Reserve
Specifications
- Brand
- Omega
- Family
- Seamaster Diver 300m
- Model
- Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Summer Blue / Bracelet
- Reference
- 210.30.42.20.03.003
- Movement
- 8800
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Chronometer, Co-Axial Escapement
- Case
- 42mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Omega Seamaster Diver 300M Chronograph](https://preview.redd.it/rnttwoktsdkf1.jpeg?auto=webp&s=ba6049773432a84c6d7acb2cbe21c5dbb1d0b870)
Omega Seamaster Diver 300M Chronograph
The Omega Seamaster Diver 300M Chronograph is a 44mm numbered edition watch made from grade 2 titanium, tantalum, and 18K Sedna gold. It features a blue ceramic wave-pattern dial and chronograph functions powered by the Master Chronometer Calibre 9900.
- Condition: Unworn, unsized, and stickered
- Case size: 44mm
- Water resistance: 300m depth rating
- Bracelet material: matching metal
![[WTS] Omega Seamaster Diver 300M America's Cup in Barcelona 2024 ref. 210.30.42.20.04.002](https://preview.redd.it/x2d2zww4i9kf1.jpeg?auto=webp&s=86945635cd2d7a76dec57062a2328c87f243f1ed)
Omega Seamaster Diver 300M America's Cup in Barcelona 2024 ref. 210.30.42.20.04.002
This Omega Seamaster Diver 300M America's Cup in Barcelona 2024 is a tribute to the 37th America’s Cup, featuring a unidirectional bezel with regatta scale and START section. The watch has a ZrO2 dial and sapphire crystal caseback with unique details.
- Condition: Healthy, under warranty until August 2029
- Case diameter: 42mm
- Height: 49.93mm
- Thickness: 13.79mm
![[WTS] Mint OMEGA Seamaster Diver 300M Black 210.30.42.20.01.001 Full Set - $4350 shipped!](https://preview.redd.it/6sd9l8o347kf1.jpg?width=640&crop=smart&auto=webp&s=2262c7b2934218c2c6182356937773e24763d3cd)
![[WTS] Omega Seamaster Diver 300M Summer Blue 210.32.42.20.03.002 42mm Rubber Strap](https://preview.redd.it/n6pbn13fdzjf1.jpg?width=640&crop=smart&auto=webp&s=9946c86c9012e8559cb27212e166b7e930949e8c)
![[WTS] Omega Seamaster Diver 300M Rubber Straps – Standard & Rare LONG (20mm, OEM Buckle) – $235 / $285 Shipped](https://preview.redd.it/xv1x7e956ljf1.jpg?width=640&crop=smart&auto=webp&s=20dfbfb4610336d560f3e3ac440dbb291b972a11)
![[WTS] Omega Seamaster Diver 300M White Dial – Ref. 210.30.42.20.04.001 – Like New, Full Set – $4950 (Jul 2025 Purchase)](https://preview.redd.it/tb71b1djo2jf1.jpg?width=640&crop=smart&auto=webp&s=7001f04deabe23141689d113f56726bd8f7998ba)

Omega Seamaster Diver 300M Black Ceramic (210.92.44.20.01.003)
This Omega Seamaster Diver 300M Black Ceramic watch features a 44mm size and is in excellent condition, complete with a triple boxed set and various documentation.
- Condition: Excellent
- Size: 44mm diameter
- Depth rating: 30 bar (300m)
- Movement: Master Chronometer

2025 NEW UNWORN Omega Seamaster Diver 300M White Ceramic 210.32.42.20.04.001
This 2025 Omega Seamaster Diver 300M features a white ceramic dial with wave patterns, a stainless steel case with brushed and high-polished finish surfaces, and a black ceramic unidirectional bezel with a white enamel diving scale. It offers enhanced functionality for divers, including precise tracking of dive time.
- Condition: Brand new, unworn
- Case material: stainless steel
- Case size: 42MM
- Bezel type: black ceramic, unidirectional

MINT Omega SEAMASTER DIVER 300M GREEN WAVE DIAL BRACELET 2025 WARRANTY FULL SET
A 2025 Omega Seamaster Diver 300m in 42mm stainless steel with a green ceramic bezel and wave dial. The watch features an Omega Co-Axial Master Chronometer 8800 automatic movement.
- Condition: Mint, Unpolished Condition
- Movement: Omega Co-Axial Master Chronometer 8800 Automatic
- Case size: 42mm diameter
- Bezel material: Green Ceramic