Seiko Cal. 4521 - 309

Seiko 4521-309

The 4521-309 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4521 caliber with 22j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-d8c433ee6b17]

Also known as: Silverwave, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
13.1mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Cream
Jewels
22j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1968

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seikata-wm-d8c433ee6b17