Seiko Cal. 4550 - 609

The 4550-609 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4550 caliber with 28j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-f796edbbb758]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1975

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