Seiko Cal. 4551 - 312

The Seiko 4551-312 represents an important milestone in Seiko's 1990 lineup. Powered by the 4551 caliber with 18j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-bbdd65b23a4c]

Also known as: Monster, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1990

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