Seiko Cal. 4550 - 625

The Seiko 4550-625 represents an important milestone in Seiko's 1991 lineup. Powered by the 4550 caliber with 27j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-ca745a834c6e]

Also known as: UFO, Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1991

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