Seiko Cal. 5640 - 515

The Seiko 5640-515 represents an important milestone in Seiko's 1988 lineup. It features a Black dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-9591434f4a9a]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1988

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