Seiko Cal. 6644 - 474

Seiko 6644-474

The 6644-474 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-1eb1e4ca7f77]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
38mm
Case Thickness
15.6mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Green
Jewels
32j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1988

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