Seiko Cal. 6131 - 630

The Seiko 6131-630 represents an important milestone in Seiko's 1975 lineup. Powered by the 6131 caliber with 18j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-9023e1c77a04]

Also known as: Turtle, Shogun

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1975

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