Seiko Cal. 4421 - 630

Seiko 4421-630

The Seiko 4421-630 represents an important milestone in Seiko's 1982 lineup. Powered by the 4421 caliber with 17j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-b8d160bebb05]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
34mm
Case Thickness
13.6mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Blue Sunburst
Jewels
17j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1982

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