Seiko Cal. 6631 - 266

The Seiko 6631-266 represents an important milestone in Seiko's 1965 lineup. It features a Navy dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-bfe3e36f71d0]

Also known as: Shogun, UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1965

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