Seiko Cal. 4550 - 877

The 4550-877 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4550 caliber with 20j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-8db6e87386d9]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1971

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