Seiko Cal. 4421 - 351

Seiko 4421-351

The 4421-351 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-5a826060ed35]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
43mm
Case Thickness
14.8mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1966

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