Seiko Cal. 6312 - 857

This Spring Drive model from 1972 features a 45mm Hardlex-Coated Steel case. Powered by the 6312 caliber with 21j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-2eaf6548bbb9]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1972

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