Seiko Cal. 4551 - 556

The Seiko 4551-556 represents an important milestone in Seiko's 1995 lineup. It features a Black dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-488c03b362cc]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1995

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