Seiko Cal. 6638 - 995

The Seiko 6638-995 represents an important milestone in Seiko's 1984 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-dd297e1fc718]

Also known as: Tuna, Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1984

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