Seiko Cal. 6643 - 901

The Seiko 6643-901 represents an important milestone in Seiko's 1986 lineup. Powered by the 6643 caliber with 28j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-dcc3404bf753]

Also known as: Samurai, Crown

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1986

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