Seiko Cal. 6670 - 557

This Spring Drive model from 1976 features a 36mm Stainless Steel case. It features a Cream dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-b769bb999ba4]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1976

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