Seiko Cal. 5638 - 915

The Seiko 5638-915 represents an important milestone in Seiko's 1973 lineup. It features a Silver dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-083f3c8c8fca]

Also known as: Turtle, Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1973

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