Seiko Cal. 4551 - 520

Seiko 4551-520

The Seiko 4551-520 represents an important milestone in Seiko's 1968 lineup. Powered by the 4551 caliber with 22j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-53cc4fd75981]

Also known as: Bullhead, UFO

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
10.1mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Green
Jewels
22j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1968

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