Seiko Cal. 6637 - 189

The Seiko 6637-189 represents an important milestone in Seiko's 1982 lineup. Powered by the 6637 caliber with 25j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-b92d7b4186d0]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1982

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