Seiko Cal. 6641 - 464

The Seiko 6641-464 represents an important milestone in Seiko's 1987 lineup. It features a White dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-1ed1a767bb9a]

Also known as: Sumo, Shogun

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1987

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