Seiko Cal. 6628 - 750

This Hand-Winding model from 1974 features a 36mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-64cdd0d8dba6]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1974

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