Seiko Cal. 6312 - 639

This Spring Drive model from 1991 features a 44mm Hardlex-Coated Steel case. It features a Black dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-f7df0d32e9da]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1991

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