Seiko Cal. 5637 - 453

Seiko 5637-453

This Automatic model from 1973 features a 44mm Hardlex-Coated Steel case. Powered by the 5637 caliber with 24j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-e21f06038f2c]

Also known as: Helmet, Golden Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
13.3mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Navy
Jewels
24j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1973

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