Seiko Cal. 6642 - 337

This Spring Drive model from 1978 features a 35mm Stainless Steel case. It features a Silver dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-dd1294e4ebf7]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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