Seiko Cal. 4551 - 756

Released in 1966, the Cal. 4551 with design code 756 was part of Seiko's domestic market collection. With its 21mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-e71ffe89faae]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1966

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