Seiko Cal. 4558 - 640

Seiko 4558-640

The 4558-640 is a sought-after Solar piece from Seiko's golden era. Powered by the 4558 caliber with 36j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-58c80c266091]

Also known as: UFO, Sportsmatic

Specifications

Movement
Solar
Case Material
Titanium
Case Width
35mm
Case Thickness
11.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Navy
Jewels
36j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1979

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seikata-wm-58c80c266091