Seiko Cal. 6231 - 878

The Seiko 6231-878 represents an important milestone in Seiko's 1965 lineup. Powered by the 6231 caliber with 34j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-e1b57a4f6174]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1965

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