Seiko Cal. 5645 - 656

The Seiko 5645-656 represents an important milestone in Seiko's 1974 lineup. Powered by the 5645 caliber with 19j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-cbdb21929878]

Also known as: Samurai, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1974

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