Seiko Cal. 6637 - 755

This Automatic model from 1990 features a 35mm Stainless Steel case. It features a Silver dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-c53acf034288]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1990

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