Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mmvsSpinnaker Hass Automatic

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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 Chronograph 44mm at true scale

Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm

Spinnaker Hass Automatic at true scale

Hass Automatic

Diameter

44mm

43mm

Lug-to-Lug

52.8mm

50mm

lowest

Thickness

17.2mm

16.5mm

lowest

Water Resistance

300m

300m

Power Reserve

60h

n/a

MSRP

$9,200

$445

lowest

Movement

Omega 9900

Seiko NH35

Case

6 specs
Diameter
44mm
43mm
Thickness
17.2mm
16.5mm
Lug-to-Lug
52.8mm
50mm
Lug Width
21mm
22mm
Material
Stainless Steel
316L Stainless Steel
Finish
Steel
n/a

Crystal & Dial

2 specs
Crystal Shape
Domed
n/a
Dial Color
Black
Flying Dutchman

Movement

5 specs
Caliber
Omega 9900
Seiko NH35
Power Reserve
60h
0h
Hacking
Yes
No
Hand-winding
Yes
No
Complications
Chronograph
None

Pricing

1 specs
MSRP
$9,200
$445
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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 Chronograph 44mm

Owners widely praise the Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm as a capable, all-around daily watch with well-integrated dial features and amazing timekeeping. Some find the dial cluttered due to its multiple complications, while others appreciate its functionality. The 44mm size is noted as providing adequate wrist presence, though some owners suggest a smaller size would be more proportional and comfortable, especially on smaller wrists or after weight loss, with one user finding it sat high on the wrist. The bracelet is described as chunky and heavy by some, though others appreciate its ruggedness and thickness, finding it suits the watch's aesthetic. The bezel action is considered less crisp than some competitors, and the helium escape valve's sharp angles potentially irritate left-handed wearers.

Spinnaker Hass Automatic

Owners widely praise the Spinnaker Hass Automatic for its quality and vibrant dial options at an accessible price point. The watch features a Seiko NH35 automatic movement and 300m water resistance. Some owners find Spinnaker watches, including the Hass Automatic, to be on the thicker side, with one user noting a previous model was considered comically large. One owner reported a quality issue with a different Spinnaker model where the crown detached. Overall, owners rate the Spinnaker Hass Automatic highly for its impressive build quality and fun aesthetic relative to its price.

From video reviewers

The dial's recovered marine plastic construction with textured finish provides distinctive material differentiation at the entry-level dive watch price point, and the sapphire crystal with anti-reflective coating ensures strong on-wrist legibility. The 300m water resistance and automatic movement deliver capable specifications, though bracelet quality and fit remain underspecified across reviews.

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