Seiko Cal. 5641 - 518

The Seiko 5641-518 represents an important milestone in Seiko's 1972 lineup. Powered by the 5641 caliber with 20j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-fbe236183bc0]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1972

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