Seiko Cal. 4550 - 654

The Seiko 4550-654 represents an important milestone in Seiko's 1971 lineup. Powered by the 4550 caliber with 26j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-c6305bec7ab1]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1971

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