Seiko Cal. 7031 - 374

The Seiko 7031-374 represents an important milestone in Seiko's 1971 lineup. Powered by the 7031 caliber with 35j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-572cb2f30c72]

Also known as: Tuna, Pogue

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1971

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