Seiko Cal. 6637 - 281

Seiko 6637-281

The 6637-281 is a sought-after Kinetic piece from Seiko's golden era. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-a66f7a0d6c5d]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
40mm
Case Thickness
11.0mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
90m
Dial Color
Green
Jewels
22j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1983

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