Seiko Cal. 6646 - 957

The Seiko 6646-957 represents an important milestone in Seiko's 1981 lineup. Powered by the 6646 caliber with 19j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-8f1874e7594c]

Also known as: Pogue, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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