Seiko Cal. 4556 - 815

This Quartz model from 1993 features a 40mm PVD Black case. It features a Navy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-36a8eac29e5e]

Also known as: Sumo, Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1993

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