Seiko Cal. 6636 - 728

Seiko 6636-728

The 6636-728 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-0ce2c56ac10b]

Also known as: Monster, Sea Horse

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
46mm
Case Thickness
8.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
190m
Dial Color
Burgundy
Jewels
33j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1979

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