Side by side

Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mmvsRolex GMT-Master II

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

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

Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm

Owners widely report the Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm offers adequate wrist presence and can handle an active lifestyle, with some finding it a wearable everyday watch. However, multiple owners suggest a 40-42mm size would be more proportional and comfortable, with one noting the bracelet feels chunky. One owner finds the 44mm Diver 300M Chronograph GMT cluttered and too busy to read quickly, while another appreciates its all-in-one complications for daily wear and travel. On balance, owners and reviewers find the Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm a capable watch, though its 44mm size is a point of contention for some.

Rolex GMT-Master II

Owners widely praise the Rolex GMT-Master II for its exceptional legibility, robust build, and comfortable bracelet taper, with many considering it the best stainless steel GMT ever made. Some find the two-tone variants a perfect balance between sports and dress, while others highlight the versatility of the "Batman" or the iconic status of the "Pepsi." The grey and black variant offers a more reserved aesthetic, and some owners view the all-black 116710LN as the best value buy. However, the bidirectional bezel's lack of satisfying clicks and the Oystersteel's proneness to scratching are noted drawbacks. Some owners find the green GMT hand and text difficult to see, and one owner considers it a downgrade from the Submariner due to its lack of quick-set date and lower water resistance. The Rolex GMT-Master II is difficult to obtain at retail, with wait times averaging 12-24 months.

From video reviewers

The 18k yellow gold construction is a notable strength. Reviewers did not reach a consensus on any weaknesses.

At a glance

18 of 29 specs differ
Diameter
Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm44mm
GMT-Master II40mm
Power Reserve
Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm60h
GMT-Master II70h
Water Resistance
Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm300m
GMT-Master II100m
MSRP
Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm$27,300
GMT-Master II$50,800

Full specifications

Case

9 specs
Category
Diver
GMT
Diameter
44mm
40mm
Thickness
17.2mm
Lug-to-Lug
52.8mm
46mm
Lug Width
21mm
Material
18kt Sedna Gold
18kt Gold
Finish
Steel
18 kt Everose gold
Water Resistance
300m
100m
Caseback
Monobloc middle case, screw-down case back and winding crown

Crystal & Dial

3 specs
Crystal Shape
Domed
Flat
Indices
Index
Lume
None
Chromalight

Movement

5 specs
Caliber
Omega 9900
3285
Beat Rate
0 vph
28,800 vph
Power Reserve
60h
70h
Jewels
0
34
Complications
Chronograph
GMT, Date

Pricing

1 specs
MSRP
$27,300
$50,800
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