Seiko Cal. 3864 - 657

This Spring Drive model from 1980 features a 34mm Stainless Steel case. It features a Silver dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-f12b2a884a03]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1980

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