Seiko Cal. 4537 - 223

Seiko 4537-223

The Seiko 4537-223 represents an important milestone in Seiko's 1977 lineup. Powered by the 4537 caliber with 18j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-6428afe6288b]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
34mm
Case Thickness
13.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
60m
Dial Color
Burgundy
Jewels
18j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1977

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