Seiko Cal. 5258 - 366

Seiko 5258-366

The Seiko 5258-366 represents an important milestone in Seiko's 1973 lineup. Powered by the 5258 caliber with 34j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-152748da83c1]

Also known as: Sumo, Emperor

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
40mm
Case Thickness
11.8mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
180m
Dial Color
Cream
Jewels
34j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1973

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