Seiko Cal. 0720 - 645

Seiko 0720-645

The 0720-645 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-5204a7ab8b7c]

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
37mm
Case Thickness
12.0mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Navy
Jewels
19j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1978

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