Seiko Cal. 6638 - 298

The Seiko 6638-298 represents an important milestone in Seiko's 1966 lineup. It features a Green dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-1ae794f58767]

Also known as: Turtle, Samurai

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1966

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