Seiko Cal. 4431 - 306

Seiko 4431-306

The 4431-306 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4431 caliber with 34j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-409fc4340f7a]

Also known as: Shogun

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
41mm
Case Thickness
14.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Black
Jewels
34j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1987

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