Seiko Cal. 5641 - 400

The Seiko 5641-400 represents an important milestone in Seiko's 1985 lineup. Powered by the 5641 caliber with 22j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-70a562d3b149]

Also known as: Silverwave, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1985

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