Seiko Cal. 5231 - 880

Seiko 5231-880

The Seiko 5231-880 represents an important milestone in Seiko's 1976 lineup. Powered by the 5231 caliber with 25j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-899d56b551cd]

Also known as: Sumo, Tuna

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
14.2mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Black
Jewels
25j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1976

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