Seiko Cal. 4550 - 922

The Seiko 4550-922 represents an important milestone in Seiko's 1974 lineup. Powered by the 4550 caliber with 20j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-8a804ecb4fa7]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1974

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