Seiko Cal. 6637 - 694

Seiko 6637-694

The Seiko 6637-694 represents an important milestone in Seiko's 1987 lineup. Powered by the 6637 caliber with 29j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-77ffbd7c8588]

Also known as: Bullhead, Sea Horse

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
12.4mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
80m
Dial Color
Green
Jewels
29j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1987

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seikata-wm-77ffbd7c8588