Seiko Cal. 4556 - 108

This Hand-Winding model from 1977 features a 45mm Two-Tone case. Powered by the 4556 caliber with 23j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-2791c615eeff]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1977

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