Seiko Cal. 5690 - 831

The 5690-831 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5690 caliber with 17j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-e5b7c31b4cc3]

Also known as: UFO, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1989

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