Seiko Cal. 4523 - 721

Seiko 4523-721

The 4523-721 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-efee916bc4be]

Also known as: Silverwave, Bellmatic

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
12.8mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
160m
Dial Color
Navy
Jewels
28j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1996

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