Seiko Cal. 5633 - 309

The Seiko 5633-309 represents an important milestone in Seiko's 1978 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ac7513ac0b3b]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1978

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