Seiko Cal. 6686 - 639

Released in 1988, the Cal. 6686 with design code 639 was part of Seiko's domestic market collection. It features a Silver dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-3bd5a80b5ddf]

Also known as: UFO, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1988

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