Seiko Cal. 4556 - 730

The Seiko 4556-730 represents an important milestone in Seiko's 1968 lineup. It features a White dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-b258bc86a590]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1968

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