Seiko Cal. 4556 - 343

The Seiko 4556-343 represents an important milestone in Seiko's 1991 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-0b2770f1dd2c]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1991

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