Seiko Cal. 6649 - 928

This Spring Drive model from 1973 features a 37mm Stainless Steel case. Powered by the 6649 caliber with 20j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-2b0ce6bc5cd7]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1973

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