Seiko Cal. 6638 - 150

This Spring Drive model from 1989 features a 38mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-72454ccc6d87]

Also known as: Emperor, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1989

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