Seiko Cal. 6639 - 218

This Spring Drive model from 1993 features a 35mm Hardlex-Coated Steel case. Powered by the 6639 caliber with 19j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-425a94563522]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1993

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