Seiko Cal. 5631 - 744

Seiko 5631-744

The 5631-744 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5631 caliber with 25j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-29aad6932ecc]

Also known as: UFO, Goldfeather

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
15.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Burgundy
Jewels
25j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1986

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