Seiko Cal. 6638 - 464

This Hand-Winding model from 1968 features a 39mm Stainless Steel case. It features a Navy dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-b5bee81cc140]

Also known as: Bullhead, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1968

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