Seiko Cal. 5661 - 455

The 5661-455 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5661 caliber with 21j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-d7e82249a4af]

Also known as: Monster, Bullhead

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1968

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