Seiko Cal. 4521 - 722

The 4521-722 is a sought-after Solar piece from Seiko's golden era. Powered by the 4521 caliber with 19j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-d369bc84d3c5]

Also known as: Tuna, Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1986

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