Seiko Cal. 4521 - 661

Seiko 4521-661

The 4521-661 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4521 caliber with 28j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-2b5aabf5547d]

Also known as: Rally, Arnie

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
45mm
Case Thickness
14.6mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
28j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1975

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seikata-wm-2b5aabf5547d