Seiko Cal. 7031 - 218

The 7031-218 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7031 caliber with 28j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-68366c421143]

Also known as: Rally, Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1980

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