Omega Seamaster 300 Seamaster 300 Master Chronometer Stainless Steel / Summer Blue / Bracelet
Reference 234.30.41.21.03.002
About this watch
The Omega Seamaster 300 Master Chronometer 234.30.41.21.03.002 is a masterpiece of luxury watchmaking, boasting a stunning Summer Blue gradient dial that exudes freshness and vibrancy. The round case measures 41.00 mm in diameter and 13.85 mm in height, striking a perfect balance between masculinity and elegance. Crafted from high-grade stainless steel and featuring a ceramic bezel, this watch is built to withstand the rigors of underwater adventures as well as everyday wear. The sapphire crystal provides scratch resistance and clarity that's hard to beat. With its impressive 300 meters of water resistance, this timepiece is a reliable companion for serious divers and water sports enthusiasts alike. At the heart of this masterpiece lies the Omega caliber 8912, an automatic movement that ensures accuracy and reliability with a 60-hour power reserve and a frequency of 25,200 vibrations per hour. METAS-certified, it meets the highest standards of precision and performance. The mixed indexes and arrow hands ensure readability at a glance, even in low light conditions. Whether you're diving into the ocean or diving into your daily routine, this watch is a reliable companion that can handle it all.
Key Features
- Striking Summer Blue gradient dial
- Robust and durable materials (stainless steel, ceramic bezel)
- High water resistance (300m)
- METAS-certified movement for accuracy
- Versatile for both casual and formal wear
Specifications
- Brand
- Omega
- Family
- Seamaster 300
- Model
- Seamaster 300 Master Chronometer Stainless Steel / Summer Blue / Bracelet
- Reference
- 234.30.41.21.03.002
- Movement
- 8912
- Movement Features
-
- Hours, Minutes, Seconds
- Chronometer, Co-Axial Escapement
- Case
- 41mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
(SOLD) Omega Seamaster 300M | 210.62.44.20.01.00 - Full Set
The Omega Seamaster 300M is a stainless steel automatic watch with a date display and water resistance of up to 300m.
- Status: (SOLD)

Omega Seamaster 300M - Black Aluminum - 210.30.42.20.01.010 ( new / 2025 )
This Omega Seamaster 300M features a 42mm stainless steel case with a black aluminum dial and mesh bracelet, powered by the Master Co-Axial Movement.
- Condition: Brand new
- Case size: 42mm
- Movement: 8806 Master Co-Axial

Omega Seamaster 300M - Summer Blue - 42mm - 210.30.42.20.03.003 ( new / 2024 )
This Omega Seamaster 300M 42mm features a Summer Blue dial on a stainless steel bracelet, powered by the Master Co-Axial movement.
- Condition: Brand new
- Case size: 42mm
- Movement type: Master Co-Axial

Omega Seamaster 300M | 210.62.44.20.01.00 - Full Set
A black ceramic and 18K gold Omega Seamaster 300M with a wave dial, measuring 43.5mm in diameter.
- Condition: Very Good (VG)
- Case size: 43.5mm
- Material: Black Ceramic and 18K Gold

Omega Seamaster 300M - 210.32.42.20.03.001
This Omega Seamaster 300M is a high-end diving watch with a 42mm case size and 300m water resistance rating. It features a very good condition, minor-wear-only case with perfect front and back sapphire crystals.
- Condition: Very good condition
- Case Size: 42mm
- Water Resistance Rating: 300m (1000 ft.)
- Depth Rating: 300m depth rating

Omega Seamaster 300M - Summer Blue - 42mm - 210.30.42.20.03.003 ( mint )
Up for sale is a mint condition Omega Seamaster 300M 42mm Summer Blue Dial on Bracelet, complete with all boxes, papers, booklets, hang tag and Omega Warranty Card.
- Condition: Mint Condition
- Case size: 42mm
- Movement type: 8800 Master Co-Axial
- Shipping cost international: 150

Omega Seamaster 300M Black Black - Diver - 210.92.44.20.01.003 ( mint )
This Omega Seamaster 300 is a black ceramic diver's watch with a wave dial, featuring a 43.5mm case and the Master Co-Axial movement. It comes with all original boxes and papers.
- Condition: Mint Condition
- Case material: Black Ceramic
- Movement: 8806 Master Co-Axial Movement
- Size: 43.5mm diameter

2023 Omega Seamaster 300m Ref: 210.32.42.20.10.001 Green Dial "Seaweed" w/ B+P
This 2023 Omega Seamaster 300m features a 42mm case, green ceramic bezel, and a green wave dial with Luminova markers.
- Condition: Excellent with light wear
- Case size: 42mm diameter
- Serial number: A,1XX,XXX
- Accessories: inner and outer boxes, warranty cards, card holder, receipt, booklet

LNIB Omega Seamaster 300 Heritage Black 41mm Steel Bracelet 2017 Complete
A 2017 Omega Seamaster 300 Heritage in black with a 41mm steel bracelet and liquidmetal bezel, featuring the Caliber 8840 self-winding movement.
- Condition: Like New (LNIB)
- Movement caliber: 8840
- Bracelet material: steel