Seiko Cal. 6691 - 588

Released in 1985, the Cal. 6691 with design code 588 was part of Seiko's domestic market collection. Powered by the 6691 caliber with 18j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-336ff0686fce]

Also known as: Rally, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1985

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