Seiko Cal. 7031 - 377

Released in 1989, the Cal. 7031 with design code 377 was part of Seiko's domestic market collection. Powered by the 7031 caliber with 28j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-0ad22705fa77]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1989

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