Seiko Cal. 5661 - 448

This Kinetic model from 1975 features a 35mm Gold-Plated case. Powered by the 5661 caliber with 31j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-5b051cf6845d]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1975

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