Seiko Cal. 5691 - 381

The 5691-381 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5691 caliber with 17j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-e382adbf7e74]

Also known as: UFO, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1986

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