Seiko Cal. 4550 - 891

The 4550-891 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4550 caliber with 32j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-31c8df353113]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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