Seiko Cal. 6312 - 693

The Seiko 6312-693 represents an important milestone in Seiko's 1968 lineup. Powered by the 6312 caliber with 25j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-d9d375209c41]

Also known as: Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1968

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