Seiko Cal. 4521 - 890

The 4521-890 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4521 caliber with 28j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-72e202f8f319]

Also known as: Rally, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1970

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