Seiko Cal. 6644 - 537

Seiko 6644-537

The 6644-537 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-a5c76aa7a01a]

Also known as: Shogun, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
11.5mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1993

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