Seiko Cal. 4551 - 681

Released in 1972, the Cal. 4551 with design code 681 was part of Seiko's domestic market collection. Powered by the 4551 caliber with 30j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-a845a1d51219]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1972

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