Seiko Cal. 4531 - 218

Seiko 4531-218

The 4531-218 is a sought-after Solar piece from Seiko's golden era. Powered by the 4531 caliber with 23j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-0a3ab90d18f0]

Also known as: Sumo, Navigator

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
13.6mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
180m
Dial Color
Green
Jewels
23j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1979

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