Seiko Cal. 5691 - 381

Seiko 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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