Seiko Cal. 5633 - 327

This Spring Drive model from 1967 features a 35mm Stainless Steel case. It features a Silver dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-dc318506ae80]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1967

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