Seiko Cal. 5690 - 644

Seiko 5690-644

The 5690-644 is a sought-after Quartz piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-9dce535611fd]

Also known as: Monster, Goldfeather

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
14.4mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Green
Jewels
18j
Frequency
21,600 bph
Power Reserve
54 hours
Year
1966

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