Seiko Cal. 5688 - 691

The 5688-691 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5688 caliber with 18j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-8b7a7d68ad31]

Also known as: Turtle, Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1983

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