Seiko Cal. 5638 - 985

The Seiko 5638-985 represents an important milestone in Seiko's 1983 lineup. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-29f50c6dba28]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1983

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