Seiko Cal. 7187 - 831

The Seiko 7187-831 represents an important milestone in Seiko's 1981 lineup. Powered by the 7187 caliber with 32j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-a6dc471a4055]

Also known as: Rally, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1981

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