Seiko Cal. 6638 - 284

The Seiko 6638-284 represents an important milestone in Seiko's 1967 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-9886ad89061a]

Also known as: UFO, Flighty

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1967

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