Seiko Cal. 5657 - 624

This Spring Drive model from 1967 features a 42mm Stainless Steel case. It features a Cream dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-5a84feff2065]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1967

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