Seiko Cal. 6636 - 612

The Seiko 6636-612 represents an important milestone in Seiko's 1996 lineup. It features a Navy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-bd1f918d633f]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1996

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