Seiko Cal. 0757 - 647

Seiko 0757-647

The Seiko 0757-647 represents an important milestone in Seiko's 1976 lineup. Powered by the 0757 caliber with 32j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-cb28fc2f89d3]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Cream
Jewels
32j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1976

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