Seiko Cal. 7031 - 155

The Seiko 7031-155 represents an important milestone in Seiko's 1982 lineup. Powered by the 7031 caliber with 17j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-e199fa68fd7f]

Also known as: Tuna, Emperor

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1982

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