Seiko Cal. 4456 - 354

This Spring Drive model from 1970 features a 41mm PVD Black case. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-6db8690a9663]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1970

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