Seiko Cal. 4521 - 146

The 4521-146 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4521 caliber with 32j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-7fbaae3d46d0]

Also known as: Sumo, Panda

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1972

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