Seiko Cal. 5644 - 671

Seiko 5644-671

The 5644-671 is a sought-after Automatic piece from Seiko's golden era. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-0c5e6dc77540]

Also known as: Arnie, Flighty

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
14.6mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1977

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