Seiko Cal. 5640 - 371

This Kinetic model from 1988 features a 42mm Hardlex-Coated Steel case. Powered by the 5640 caliber with 30j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-b0564e0db8db]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1988

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