Seiko Cal. 6337 - 161

This Spring Drive model from 1974 features a 39mm Stainless Steel case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-e3e37158da40]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1974

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