Seiko Cal. 5637 - 221

The Seiko 5637-221 represents an important milestone in Seiko's 1994 lineup. Powered by the 5637 caliber with 25j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-ab5fb4ee56cd]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1994

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