Seiko Cal. 6312 - 693

Seiko 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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