Seiko Cal. 4551 - 555

The Seiko 4551-555 represents an important milestone in Seiko's 1970 lineup. Powered by the 4551 caliber with 36j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-4186a00f4879]

Also known as: Sumo, Sea Horse

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1970

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