Seiko Cal. 4556 - 228

The Seiko 4556-228 represents an important milestone in Seiko's 1977 lineup. Powered by the 4556 caliber with 33j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-3a24fa41fedb]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1977

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