Seiko Cal. 6638 - 175

The Seiko 6638-175 represents an important milestone in Seiko's 1969 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-2c4563e3317c]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1969

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