Seiko Cal. 5638 - 815

The Seiko 5638-815 represents an important milestone in Seiko's 1990 lineup. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-5504b36402eb]

Also known as: Helmet, Rally

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1990

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