Seiko Cal. 5639 - 660

The Seiko 5639-660 represents an important milestone in Seiko's 1985 lineup. It features a White dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-b9863ea66c29]

Also known as: Sumo, Arnie

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

38mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1985

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