Seiko Cal. 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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