Seiko Cal. 5641 - 305

The Seiko 5641-305 represents an important milestone in Seiko's 1991 lineup. Powered by the 5641 caliber with 22j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-aac82d2d1507]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1991

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