Seiko Cal. 6635 - 637

This Hand-Winding model from 1970 features a 34mm Stainless Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-6c4adb702b65]

Also known as: Monster, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1970

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