Seiko Cal. 6231 - 970

This Spring Drive model from 1965 features a 43mm Stainless Steel case. It features a Silver dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-a41caeb84699]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1965

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