Seiko Cal. 6636 - 557

The Seiko 6636-557 represents an important milestone in Seiko's 1989 lineup. It features a Black dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-efc1c1dc13da]

Also known as: Monster, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1989

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