Seiko Cal. 5638 - 615

Released in 1977, the Cal. 5638 with design code 615 was part of Seiko's domestic market collection. It features a White dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-bf7a2c697ed8]

Also known as: Rally, World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1977

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