Seiko Cal. 5638 - 317

The Seiko 5638-317 represents an important milestone in Seiko's 1991 lineup. It features a Black dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-fb6412040d14]

Also known as: UFO, Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1991

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