Seiko Cal. 6644 - 438

The Seiko 6644-438 represents an important milestone in Seiko's 1994 lineup. It features a Green dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-5abac797d9d8]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1994

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