Seiko Cal. 6638 - 370

The Seiko 6638-370 represents an important milestone in Seiko's 1970 lineup. It features a Cream dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-46f1f56c8292]

Also known as: Flighty

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1970

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