Seiko Cal. 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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