Seiko Cal. 6639 - 159

The Seiko 6639-159 represents an important milestone in Seiko's 1986 lineup. With its 22mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-80851bec85dc]

Also known as: Tuna, World Timer

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1986

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