Seiko Cal. 5631 - 345

This Spring Drive model from 1994 features a 43mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-958ade039a95]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1994

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