Seiko Cal. 6637 - 389

Seiko 6637-389

The 6637-389 is a sought-after Quartz piece from Seiko's golden era. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-45d4de960a8c]

Also known as: Pogue, Bullhead

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
11.6mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
18j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1981

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