Seiko Cal. 6637 - 189

Seiko 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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