Seiko Cal. 5631 - 899

The Seiko 5631-899 represents an important milestone in Seiko's 1990 lineup. With its 19mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-7104ad37a152]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1990

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