Seiko Cal. 4521 - 241

The 4521-241 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4521 caliber with 34j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-fa4023691a0c]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1980

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