Ianos AvyssosvsSeiko Prospex Marinemaster 1968 Heritage Diver's Watch

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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.

Ianos Avyssos at true scale

Avyssos

Seiko Prospex Marinemaster 1968 Heritage Diver's Watch at true scale

Prospex Marinemaster 1968 Heritage Diver's Watch

Diameter

44mm

42.6mm

Lug-to-Lug

54mm

49.3mm

lowest

Thickness

n/a

13.4mm

Water Resistance

300m

300m

Power Reserve

42h

50h

highest

MSRP

$1,257

lowest

$2,900

Movement

Sellita SW216-1

Seiko 8L35

Case

4 specs
Diameter
44mm
42.6mm
Thickness
n/a
13.4mm
Lug-to-Lug
54mm
49.3mm
Lug Width
n/a
20mm

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
Bronze
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Sellita SW216-1
Seiko 8L35
Type
Manual
Automatic
Power Reserve
42h
50h
Jewels
0
26

Pricing

1 specs
MSRP
$1,257
$2,900
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Reviews

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

Ianos Avyssos

The Ianos Avyssos is recognized for its historically inspired design, featuring a sandwich dial with lume visible through cut-out markers and a small seconds disc referencing the Antikythera mechanism, alongside hour markers shaped like Greek sponge diver ballast stones. Reviewers note its 44mm angular case with a PVD finish and a blue-to-black dégradé dial. One reviewer flags a disconcerting ratcheting click when tightening the crown. An owner mentions the strap's durability for diving but notes a NATO is included. On balance, owners and reviewers appreciate the Ianos Avyssos for its unique historical design and solid construction at its price point.

Seiko Prospex Marinemaster 1968 Heritage Diver's Watch

Owners widely praise the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch for its premium finishing, tool-like appearance, and comfortable wearability, with many highlighting the appealing case shape and 4 o'clock crown position. Reviewers and owners alike note the excellent build quality and Zaratsu-like polishing, with some considering it a refined step up from standard Prospex models. The bezel rotation is described as precise, and the watch is seen as a manageable alternative to larger models. Some enthusiasts question the price point compared to competitors, while others argue the craftsmanship justifies the cost. One owner flagged bezel misalignment as a significant issue for the price. The watch features a stainless steel case with super-hard coating and a black textured dial, powered by the Seiko 8L35 automatic movement.