Seiko Cal. 6637 - 752

This Quartz model from 1983 features a 38mm Stainless Steel case. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-76730741c6e1]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1983

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