Seiko Cal. 5638 - 505

The Seiko 5638-505 represents an important milestone in Seiko's 1985 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-2ca5255a6388]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1985

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