Seiko Cal. 5243 - 523

Seiko 5243-523

The 5243-523 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5243 caliber with 18j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-e56d2e1cb411]

Also known as: Sumo, Helmet

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
34mm
Case Thickness
11.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
150m
Dial Color
Champagne
Jewels
18j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1975

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