Seiko Cal. 5641 - 285

The Seiko 5641-285 represents an important milestone in Seiko's 1968 lineup. Powered by the 5641 caliber with 35j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-4281ebcc47a5]

Also known as: UFO, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1968

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