Seiko Cal. 4457 - 976

This Spring Drive model from 1967 features a 37mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-84e480d05b29]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1967

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