Seiko Cal. 6623 - 631

This Spring Drive model from 1987 features a 43mm Hardlex-Coated Steel case. Powered by the 6623 caliber with 34j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-ca6301314eb0]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1987

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