Seiko Cal. 4538 - 961

Seiko 4538-961

The 4538-961 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4538 caliber with 33j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-2fbbe8ca8e2b]

Also known as: UFO

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1984

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