Seiko Cal. 4550 - 691

The Seiko 4550-691 represents an important milestone in Seiko's 1968 lineup. With its 22mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-89b00995c0a0]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1968

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