Seiko Cal. 4558 - 222

The Seiko 4558-222 represents an important milestone in Seiko's 1991 lineup. Powered by the 4558 caliber with 31j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-1b89717d258a]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1991

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