Seiko Cal. 4421 - 731

Seiko 4421-731

The 4421-731 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4421 caliber with 31j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-c974fe9a8cdf]

Also known as: Shogun, Arnie

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
43mm
Case Thickness
9.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Burgundy
Jewels
31j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1969

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