Seiko Cal. 6690 - 728

This Hand-Winding model from 1973 features a 40mm Gold-Plated case. It features a Black dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-c283c921f673]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1973

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