Seiko Cal. 5616 - 638

The Seiko 5616-638 represents an important milestone in Seiko's 1990 lineup. Powered by the 5616 caliber with 23j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-d7674507f913]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1990

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