Seiko Cal. 7047 - 731

The Seiko 7047-731 represents an important milestone in Seiko's 1971 lineup. Powered by the 7047 caliber with 21j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-2fce32ca7f3f]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1971

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