Seiko Cal. 4596 - 285

Seiko 4596-285

The 4596-285 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-655dc7613e80]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Silver
Jewels
35j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1991

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seikata-wm-655dc7613e80