Seiko Cal. 5258 - 298

The 5258-298 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5258 caliber with 18j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-8465992f75d4]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1971

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