Omega Seamaster Diver 300M Co Axial Master Chronometer 42mmvsRolex Deepsea

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm at true scale

Seamaster Diver 300M Co Axial Master Chronometer 42mm

Rolex Deepsea at true scale

Deepsea

Diameter

42mm

44mm

Lug-to-Lug

49.9mm

n/a

Thickness

13.6mm

n/a

Water Resistance

300m

3900m

highest

Power Reserve

55h

70h

highest

MSRP

$16,600

$15,550

lowest

Movement

Omega 8800

3235

Case

8 specs
Diameter
42mm
44mm
Thickness
13.56mm
n/a
Lug-to-Lug
49.9mm
n/a
Lug Width
20mm
n/a
Material
Bronze Gold
Oystersteel
Finish
Steel
n/a
Water Resistance
300m
3900m
Caseback
n/a
Monobloc middle case, screw-down case back and winding crown. Rolex Ringlock System case architecture with Helium escape valve

Crystal & Dial

3 specs
Crystal Shape
Domed
Flat
Indices
n/a
Index
Lume
None
Chromalight

Movement

5 specs
Caliber
Omega 8800
3235
Beat Rate
0 vph
28,800 vph
Power Reserve
55h
70h
Jewels
0
31
Complications
None
Date

Pricing

1 specs
MSRP
$16,600
$15,550
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm

Owners widely praise the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm for its impressive detail, versatile design that bridges toolish and elegant, and satisfying bezel action. Reviewers highlight its wearability, with the 42mm case and 13.7mm thickness considered just right, and note the white ceramic dial with red accents pops. Owners also commend its case finishing and legible dial with bold indices, with one owner considering it a timepiece that can be passed down. The Omega 8800 movement is recognized for its precision and magnetic resistance, offering a 55-hour power reserve. Some owners find the black dial lacks shine indoors and wish for brighter hour markers, while one reviewer notes the ceramic case is prone to shattering and the exhibition case back has sharp edges. The mesh bracelet's clasp is criticized by one reviewer for being bulky, and another points out thickness around the clasp as a drawback.

Rolex Deepsea

The Rolex Deepsea is widely seen as a substantial, well-built watch with impressive engineering. Owners and reviewers note its robust compression architecture and the caliber 3235 movement, certified to Rolex's stringent -2/+2 seconds per day standard. Some find the watch exceptionally comfortable on a Rubber B strap, while others appreciate its heft and balance on the bracelet. However, its large size and thickness are polarizing, with some finding it too big and heavy for smaller wrists or as a daily wearer, and a few consider it a showpiece rather than a practical tool unless one is a serious diver. Overall, owners and reviewers rate the Rolex Deepsea highly for its impressive engineering and robust build, despite its polarizing size and thickness.