Seiko Cal. 4551 - 284

The Seiko 4551-284 represents an important milestone in Seiko's 1991 lineup. Powered by the 4551 caliber with 31j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-5c548f5560b7]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1991

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