Seiko Cal. 6131 - 399

The Seiko 6131-399 represents an important milestone in Seiko's 1968 lineup. Powered by the 6131 caliber with 32j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-75f93ad18999]

Also known as: Rally, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1968

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