Seiko Cal. 4598 - 638

Seiko 4598-638

The 4598-638 is a sought-after Solar piece from Seiko's golden era. Powered by the 4598 caliber with 26j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-9ceab9abd5ac]

Also known as: Sportsmatic

Specifications

Movement
Solar
Case Material
Titanium
Case Width
39mm
Case Thickness
9.1mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Champagne
Jewels
26j
Frequency
28,800 bph
Power Reserve
64 hours
Year
1967

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