Seiko Cal. 5631 - 191

The Seiko 5631-191 represents an important milestone in Seiko's 1975 lineup. With its 19mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-a237215f8945]

Also known as: Panda, Crown

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1975

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