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 high-quality finishing on the Oystersteel case and bracelet, exceptional dial legibility with bright Chromalight lume, and the versatility offered by various color schemes and models like the "Sprite," "Root Beer," "Pepsi," "Batman," and "Batgirl." Some owners consider specific references, such as the all-black 116710LN, to be the best stainless steel GMT ever made or a great value. The watch is noted for its GMT function and thinner case profile, with accuracy reported around -2/+2 seconds per day by one owner. However, some find the ceramic bezel lacks satisfying clicks, and one owner dislikes the green GMT hand and text against the black dial, along with the bezel text font and polished center links. Acquiring a GMT-Master II from an authorized dealer is challenging, with significant wait times.

From video reviewers

The two-tone black and brown Cerachrom bezel offers a novel and contemporary aesthetic. Reviewers suggest buyers verify lug-to-lug measurements and compare bracelet comfort against full-steel alternatives due to the mixed-metal construction.

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$20,050

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
Rolesor
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
$20,050
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