Seiko Cal. 5640 - 853

The Seiko 5640-853 represents an important milestone in Seiko's 1968 lineup. Powered by the 5640 caliber with 29j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-622e5482be4f]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1968

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