Seiko Cal. 6623 - 739

This Spring Drive model from 1975 features a 46mm Hardlex-Coated Steel case. It features a Black dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-3742f4ec88a7]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1975

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