Seiko Cal. 5669 - 790

The 5669-790 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-3afc85c1b2b7]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1971

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